On AIDS Day, the minister of Health Department demanded that the problems _____ paid special attention to.
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A
referred to being
B
referred to be
C
refer to being
D
refer to be
推荐题目
Because of the young man’s       English, he couldn’t make himself _______.
#95667
A
broken; understood
B
broken; understand
C
break; understand
D
breaking; understanding
The old man, ______ abroad for twenty years, is on the way back to his motherland.
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A
to work
B
worked
C
to have worked
D
having worked
This machine is very easy______. Anybody can learn to use it in a few minutes. 
#90027
A
operating
B
to be operating
C
operated
D
to operate