23. If you (come)………come…... here in Spring, you’ll have a chance to go to the village fair.
24. Your work wouldn’t be successful if you ( not try)……didn't try………….… hard.
25. Martha is a vegetarian. She (not/eat) .........doesn't eat...................... meat.
26. I (look) ..........am looking..................... for the manager. I can’t find him anywhere.
27. We (not/ see) .......havenot seen.................................. Lisa recently.
28. The patient (die) …has died……………….before the doctor arrived

35 . We had lunch then we took a look around the shops. (Chúng tôi ăn trưa rồi sau đó chúng tôi đi xem xung quanh các cửa hàng.)

-> Before we took a look around the shops, we had had lunch. (Trước khi chúng tôi đi xem xung quanh các của hàng, chúng tôi đã ăn trưa rồi.)
36. The victims have been provided with food and clothing
37 After she has explained everything clearly, we started our work
- By the time we started our work, she had explain everything clearly
38 Susan started learning Vietnamese when she was ten years old

Susan has learned VietNamese since she wasten years old.
39 Because it rained heavily, the road in front of my house was flooded.
40 

I don't have enough money, so I can't buy that printer.

-> If I had enough money,  I couldn't have bought that printer.

`IV)`

`23` . come

`24` . didn't try

`25` . doesn't eat

`26` . have looked

`27` . haven't seen

`28` . had died

`V)`

`35` . Before we took a look around the city , we had had lunch

`36` . The victims have been provided with the food and clothing

`37` . By the time we started our worked , she had explained everything clearly

`38` . Susan has learnt vietnamese since she was ten years old

`39` . Because it rained heavily , the road in front of my house was flooded

`40` . If I had enough money , I could buy this lovely dog