She hasn't seen her elder sister since 1999

The last time he wrote to me was in April

1 She hasn't seen her elder sister since 1999.

2 The last time he wrote to me was April.

lx r 

was

found

watched

checked

wanted

had to go

served

were called

was

were

guarded

was attacked

ran

lit

could be seen

was abandoned

is

became

English has been learned for 7 years
English is spoken all over the world
This novel was written by Linh three years ago
Linh's homework is being done at the moment
This house hasn't been  used for a long time
This book was read by Hoang two weeks ago
I was bought a bike by my sister yesterday
My bike is being repaired by my father at present
Japanese has been learned since 2000
A new house will be built next year
He has just been lent some money by Lan
A lot of homework is done by her every day
This cat is drawn very well by Hung
That report isn't written by me
Hue wasn't visited by her last Sunday
My brother's homework is being done now
this car has been used for ten years
Three languages can be spoken fluently by him
The instructions aren't read carefully by me
HA Ancient Town wasn't visited by her sister last summer

sells
is sold
is eaten
calls
are typed
takes
isn't taken
go
does not work
is kept
visited
told
had attacked
gave
was finished
was 
was guarded 

sells

is sold

is eaten

calls

are typed

takes

isn't taken

go

doesn't work

is kept

visited

tell... attack

gives

was finished

is

is guarded

One of the most lethal poisons on Earth, ten thousand times more deadly than cyanide, is tetrodotoxin, more concisely known as TTX. Its potency is well known in East Asia, where it regularly kills (26. DINE) ___diners___ who have braved the capricious (27. DELICATE) __delicacy____ known as puffer fish. This toxin has a (28. TERROR) ____terrifying__ method of operation: twenty-five minutes after (29. EXPOSE) ___exposure___, it begins to paralyse its victims, leaving the victim fully aware of what is happening. Death usually results, within hours, from suffocation or heart failure. There is no known antidote. If lucky patients can (30. STAND) ____withstand__ the symptoms for twenty-four hours, they usually recover without further (31. COMPLICATE) ____complications__. It is not an ordinary poison. What is strange about its (32. OCCUR) __occurrence____ is that it is found in such a wide range of creatures, from algae to angelfish spanning entire kingdoms of life. It is rather unlikely that such an unusual toxin evolved (33. DEPEND) _independently_____ in so many unrelated animals. Marine biologists have discovered that the poison is produced by bacteria living in the gut of its host. The best explanation is that a symbiotic relationship exists between the host and the (34. WELCOME) ____unwelcome __ guest, where microbes exchange poison for nutrients, providing a valuable (35. DEFEND) ____defensive__ weapon for its host.

would go

would not have to

enters

would have passed

had studied

rains

will have

will be 

will not help

angry

angrily

would go

wouldn't have to

enters

would pass... studied... 5. rains

must have

will be

won't help

angry... angrily

1. These flowers are watered by my father every morning.

2. Fiona was invited to John’s birthday party by him lats night.

3. The dinner is being prepared in the kitchen by her mother.

4. Our teeth should be cleaned twice a day.

5. The English grammar has been explained by our teacher.

6. Tom’s parents will be visited by him next month.

7. She used to be given some sweets by her mother after the meals.

8. A new supermarket is going to be built near my house.

9. Our environment needs to be protected.

10. Are you made to study hard by your parents?

listens

is always thinking

have not met

left

doesn't study

have

fly

fries

closes

went

arrived

had been

didn't go

Did she get

had finished

went

burned

was cooking

is playing

listens... thinks

haven't met... left

doesn't study

have

fly

fries

closes

went

arrived... was

didn't go

did she get

had finished... went

burned... was cooking

is playing