The Australian boy has a good ______of Chinese and can communicate with others freely.
A. request B. Command
C. demand D. usage
________time goes by，Mother’s hair has turned grey and the wrinkles on her face deeper.
A．As B．With C．While D．Because
Many questions ______ at the meeting, but he answered none.
A. came up B. raised
C. were risen D. asked
----My sister is very upset today.
----It’s your fault. You ________ the bad news to her yesterday.
A. should tell B. should have told
C. shouldn’t have told D. must tell
They ________that immediate action be taken to stop the water pollution .
A. requested B. expected
C. wished D. realized
The open-air celebration has been put off ______the bad weather .
A .in case of B. in spite of
C. instead of D. because of
