Keys should never be hidden around the house since thieves _____ know where to look.
| A．virtually | B．variously | C．unavoidably | D．invariably |
That was because the school bus was _________ by a thick fog.
| A．broke off | B．held up | C．kept up | D．turned off |
With so much work _________, they feel worried all the time.
| A．doing | B．to do | C．done | D．having done |
It was at 12 o’clock _________ they came home from school.
| A．what | B．when | C．that | D．Which |
I don’t have to do it and _________ do you. We’re both too busy.
| A．more than | B．no more than |
| C．once more | D．no more |
I hear that _________ she is lovely she can be extremely difficult to deal with.
| A．whether | B．as if | C．if | D．While |