` IV `

` QKĐ ` tobe :

` ( + ) ` :S + was / were + ...

` - ` : I / he / she / it + was + ...

` - `: You / we / they + were + ...

` ( - ) ` : S + wasn't / weren't + ...

` - ` : I / he / she / it + wasn't + ...

` - ` : You / we / they + weren't + ...

` ( ? ) ` :Was / were + S + ...

` - ` : Was + he / she / it + ... ?

` - ` : Were + you / we / they + ....

IV. Choose the best answer:

1. They ................... students yesterday.

a. were

b. is

c. was

d. am

2.They ............. doctors two years ago.

a. am

b. is

c. was

d. were

3. They ............... farmers last month.

a. are

b. is

c. were

d. was

4. We ....... nurses yesterday.

.are

b. were

c. was

d. is 

5 The weather ........ cold yesterday.

a.aren’t

b. isn’t 

c. wasn’t

d. weren’t

6. I .........a pupipl last week.

a.wasn’t

b. isn’

t c. aren’t

d. weren’t

7. These hats .......new yesterday

. a.aren’t

b. isn’t

c. wasn’t

d. weren’t

8. My parents........teacchers two years ago.

a.are

b. were

c. was

d. is

9. He .............a mechanic last Monday

. a.aren’t

b. is

c. wasn’t

d. weren’t

10. ... he an engineer yesterday? - No, he ......

a. Is/ is n’t

b. Are/aren’t

c. Was/wasn’t 

. Were/weren’t