IX. Complete the sentences using the past simple form of the verbs.
1- I (be).......................................at school an hour ago.
2- He (be).................................. a doctor two years ago.
3- They (be)................................. poor in 2015.
4- Lan and Ba (be) .........................in Dalat last year.
5- It (be not)............................ cold yesterday.
6- She (be)........................in the hospital last week.
7- This hat (be not) .........................here yesterday.
8- My parents (be not) .......................happy last New Year.
9- He (be not) ..........................at home last night.
10- (Be)................... he an engineer some years ago? No, he (be not).....................
11- (Be) .................it hot last week?
12- The windows (be) ....................open yesterday morning.
13- (Be)................. you a teacher two years ago? Yes, I (be).................
14- Where (be) ....................Nam yesterday afternoon?
15- Why (be) ............................he unhappy last Tuesday?