______ you are supposed to do ______ you don't like a thing is ______ it. Don't complain.
| A．That; what; change | B．When; that; to change |
| C．What; when; change | D．What; that; changing |
Take care! Accidents _________ happen along this part of the road.
| A．will | B．would | C．must | D．Shall |
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 |