Three fourths of the homework _________ today.
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A
has done
B
has been done
C
have done
D
have been done
推荐题目
If Newton lived today, he would be surprised by what _______ in science and technology.
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A
had discovered
B
had been discovered
C
has discovered
D
has been discovered
She used ______ on the right in China, so she was not used _______ on the left in England at first.
#103158
A
to drive; to drive
B
to drive; driving
C
to driving; to driving
D
to drive; to driving
---The president _____ by his doctor today that his cancer has come back.
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A
informs
B
has informed
C
has been informed
D
is being informed
Unfortunately, when I dropped in, Professor Smith ________, so we only had time for a few words.
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A
has just left
B
had just left
C
just left
D
was just leaving