—Where is Jack?
— In the sitting room. He _______ TV with his brother.
| A.watch | B.watched | C.is watching | D.was watching |
一Have you mended your bike,Bob?
一Yes,I______it twenty minutes ago.
| A.have mended | B.mend | C.had mended | D.mended |
Robots _____more heavy work for us in the future.
| A.will do | B.did | C.have done | D.were doing |
Look! The police ______ the food onto the bank of the river.
| A.am carrying | B.is carrying | C.are carrying | D.are carried |