Ex 1:

1. Where are they going to after school ? 

2. What are they doing at 7 o'clock in the evening ?

3. Where is Ben meeting his friends tonight ?

4. Why does Tom break the window in the classroom ?

5.Who has a terrible headache ?

Ex 2:

1. Is was cloudy yesterday.

2. In 1990,we moved to another city.

3. When did you get the first gift ?

4. She did not go to the church five days ago.

5. Were they happy on their last holiday ?

*Công thức:

Với tobe:

+) S+ was/ were +…

-) S + was/ were + not

?) Was/ Were + S +…?

  WH-word + was/ were + S (+ not) +…?

Với động từ thường :

+) S + V2/ed +…

-) S + did not + V nguyên

?) Did + S + V (nguyên thể) ?