题目内容

The report expressed ____ over continuing high unemployment.

A. concern
B. concept
C. concert
D. concentration

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Our greatest happiness consists ____ serving the people.

A. of
B. in
C. over
D. about

Japan and China signed a ____ peace and friendship treaty.

A. historical
B. historic
C. history
D. historian

____ you need help, do not hesitate to call me.

A. Should
B. Could
C. Might
D. Must

“I should advise you not to do that.” The modal auxiliary SHOULD express ____.

A. obligation
B. disappointment
C. future in the past
D. tentativeness