--Shall Mary come and play computer games?
--No,__________ she has finished her homework.
| A．when | B．if | C．unless | D．once |
When ______from top of the hill, our school looks small.
| A．seen | B．seeing | C．see | D．to see |
Tom went to his teacher for ______ on how to work out the problem.
| A．an advice | B．advice | C．advices | D．the advices |
This is his only request that the room ______ after being used.
| A．is cleaned | B．will be cleaned | C．would be cleaned | D．be cleaned |
Hearing the news about the crash of Air France Flight 447, he became very concerned _______ his daughter on board.
| A．in | B．with | C．about | D．at |
—So you didn’t say hello to him last night?
—Well, I stopped and smiled when I saw him, but he_______ me and walked on.
| A．ignored | B．refused | C．asked | D．missed |