Put the verbs in brackets into the correct tense form : ( Chia động từ trong ngoặc ở dạng thì chính xác )

1. She ( not be) ……………….a nurse.

2. Nam and Lan (not be)………………in the living room.

3. We (not be)…………..in the yard.

4. These ( be)…………….your books?

These are Bob and Boom.These books are not.............. . .........................books are in the desk
A.their,theirs                                 B.theirs,them                                         C.theirs,their