Use the Past form of the verbs

V. Use the Past form of the verbs:
1- I (be).......................................a student 2 years ago.
2- He (be).................................. a doctor two years ago.
3- They (be)................................. farmers last year.
4- Lan and Ba (be) .........................nurses last year.
5- It (be not)............................ cold yesterday.
6- She (be not)........................a pupipl last week.
7- This hat (be not) .........................new yesterday.
8- My parents (be not) .......................teacchers two years ago.
9- He (be not) ..........................a mechanic last Monday.
10- (Be)................... he an engineer yesterday. No , he (be not).....................
11- (Be) .................It hot last week?
12- The windows (be) ....................open last Monday.
13- (Be)................. you a teacher two years ago? Yes , I (be).................
14- Where (be) ....................Nam from yesterday?
15- Why (be) ............................he unhappy last Tuesday?