1 A

2 A

3 C

4 B

5 D

1 A beautiful hat in the chop has been chosen by her

2 Grass is being cut in the field now

3 The cat isn't going to be found in the kitchen

4 A kite isn't flown in the afternoon by her son

5 A bullet is going to be shot at the ball by him

6 Some meat has been eaten in the kitchen by Tom

7 Beer is being drunk by her now

8 An essay is going to be written 

9 A cat is being brought to the shop by his brother

10 A lot of money is often spent on clothes by her

13 C=>must

14 C=>must

15 A=>must

16 A=>should

17 A=>should

18 C=>might

19 A=>couldn't

20 B=>mustn't

1. They planted a lot of trees around the park last weekend.

→ A lot of trees were planted around the park last weekend

3. Promise to pay back the money and I will lend you some.

→If you promise to pay back the money, I will lend you some.

4. I last saw Jenny when I graduated from university.         

→ I haven’t seen Jenny since I graduated from university.       

5. Jacob is a more skillful weaver than I am.

→ Jacob weaves more skillfully I do

6. Because of her bad behaviour, she was punished.

→ Because she behaved bad, she was punished.

She asked me why I didn't go with her

She tells her son not to open the window

He told me that they has worked at this...

He suggested having another dish of fried fish

She exclaimed that he was a naughty boy

My friend wondered where they visited the next week

The staff asked the customer if he payed in cash...

He suggested driking beer with him

She said that she didn't know how to...

My mother told me not to go out

When did the Effiel Tower first open?

What are you going to do tomorrow?

How heavy is your sister?

When did the students have a medical check-up?

What would you like to eat?

3 If we keep our environment clean, we will enjoy a healthy life.

4 John hasn't been seen by me since he was...

5. Duong is a stronger swimmer than his friends.

-> Duong swims more strongly than his friends 

6. Despite not being rich, people in the countryside often have a peaceful and happy life.

-> Although people in the countryside are not rich, they often have a peaceful and happy life