The fire destroyed all _______ was in the building.
| A．what | B．that | C．which | D．who |
Some of the _______suspects refused to answer and kept their mouths shut.
| A．questioning | B．being questioned |
| C．questioned | D．to be questioned |
I told you that you shouldn't waste your time playing the computer games,_____________?
| A．didn't I | B．did I | C．should you | D．shouldn't you |
If human beings had been a bit less greedy and cruel, more birds and animals _______dying out.
| A．ought to avoid | B．could have been avoided |
| C．should have avoided | D．might have avoided |
With a lot of difficult problems____________, the manager felt worried all the time.
| A．to settle | B．settling |
| C．settled | D．being settled |
--Was Tom there when you arrived?
--Yes, but he___________ home soon afterwards.
| A．had gone | B．has gone | C．is | D．went |