bài 1:

1) Last night i ..was... sad but now i ..am.. happy

2) The weather .is... hot today but it .was.... cold last month

3) David .is at... sam's house now

4) Yesterday ..I was.. at school but now i .am.... at home

5) Today they ..are... strongbut last week they ...were.. weak

bài 2:

1)Mom and Dad ..were.... at home yesterday . They were at the hospital

2)The weather ...is.. nice . It was windy and rainy

3.).Was... he free all day yesterday?

4)She ..was.. tired last night

5)i ...was... in london last month 6..... you at Nina's house yesterday

7)i.were... with him yesterday

8)..Were.. they happy last week.

9)He....was.... at school . He was at home

5 sao nha bạn

1. was - am

2. is - was

3. is

4. was - was 

5. are - were

Bài `2`

1. were

2. is 

3. was

4. was

5. was

6. were

7. was

8. were

9. was