Put each verb in brackets into a suitable past verb form.
When Professor Mallory the famous archaeologist   invited  me to take part in his expedition to find the Lost City of the Himalayas I (1)...................... (not hesitate) to accept his invitation. Mallory (2).......................... (discover) an ancient map showing the position of the city although no European (3).................. (ever go) to the area before. In fact most of Mallory s colleagues either (4) ..........................(believe) that the city (5)....................... (never exist) or (6) .....................(feel) that it (7)...................... (vanish) long ago and (8)....................... (become) simply a legend. According to the Professor the builders of the city (9) .........................(hide) it among the mountains in order to protect its immense riches. He (10) ......................(believe) that the descendants of these ancient people (11) .......................(still keep) themselves apart from the rest of mankind for the very same reasons. So when we (12).................... (set off) on a cool May morning towards the distant mountains each of us (13) ................(look forward) to exciting discoveries. For a week or more we (14) ......................(climb) higher and higher following the map which Mallory (15)...................... (study) from time to time. Then one afternoon while we (16)..................... (rest) at the top of a valley we (17)...................... (notice) that a rider on a horse (18) ....................(wave) at us from the other side of the valley. A rider whose clothes (19)....................... (shine) like gold!

1. Underline the most suitable verb form in each sentence. The first one is done for you.
a) I suddenly remembered that I forgot/had forgotten my keys.
b) While Diana watched/was watching her favourite television programme there was a power-cut.
c) Tom used to live/would live in the house at the end of the street.
d) Who was driving/drove the car at the time of the accident?
e) By the time Sheila got back Chris went/had gone.
f) David ate/had eaten Japanese food before so he knew what to order.
g) I did/was doing some shopping yesterday when I saw that Dutch friend of yours.
h) I used to like/was liking sweets much more than I do now.
i) What exactly were you doing/did you do when I came into your office yesterday? 
j) Laura missed the party because no-one was telling/had told her about it. 
k) Tanya would/used to be a doctor.

exercise: Change into the passive form

1,he broke my laptop

2;I sent my children to summer camp

3,she caught the they last night

4,the secretary finished the report last night

5,Sam gave a gift to his father

6,Phong wrote his report on the way to work

7,He lost his newpapers yesterday

8,my mother cleaned the rooms yesterday morning

9,Minh watered all the treets in his gardean last week

10,we checked the doors carefully before going home

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