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41 classical

42 favorable

43 contestants

44 refillable 

45 environmentally

46 had finished

47 eating

48 to meet

49 has just completed

50 will be built

41 respiratory

42 Deforestation 

43 protection

44 endangered

45 illegally

46 not to touch

47 having eaten

48 traveled

49 have never seen

50 being helped

14 C

15 B

16 D

17 A

18 C

19 D

20 C

21 B

22 D

23 D

24 C

25 D

26 A

27 B

28 B

29 A

• Can't find:

  • "I can't find the remote control anywhere; I must have misplaced it."
  • "She can't find her favorite book; she thinks she left it at the library."

• Hibernate:

  • "Bears hibernate during the winter to conserve energy and survive the cold months."
  • "The software will automatically hibernate if you don't use it for a certain period of time."

• Hibernating last for (how long):

  • "The duration of hibernation can vary; for instance, some bears hibernate for up to six months."
  • "In the software's power-saving settings, hibernating lasts for 15 minutes of inactivity before it automatically activates."

He wanted to study this problem by comparing the brains of hibernating animals, during sleep and awake periods.

To reduce his laptop's energy, he decided to set his laptop to hybernating mode

1. <be> are

2. <start> started

3. <have> had

4. <finish> finished

5. <not call> didn't call

6. <want> wanted.

1 are

2 started

3 had 

4 finished

5 didn't call

6 wanted

bear

nhớ cho mk một like nha

Bánh mì

wrote nhé

"When we had written the letter, we went to the post office."