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1. In the 1950s in the USA, most families had just one phone at home, and wireless phones _______ yet.
A.
haven't invented
B.
haven't been invented
C.
hadn't invented
D.
hadn't been invented
【考点】
动词的语态; 过去完成时;
【答案】
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单选题
普通
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真题演练
换一批
1. Instead of getting down to a new task as I _____, he examined the previous work again.
A.
had expected
B.
have expected
C.
would expect
D.
expect
单选题
普通
2. The children failed to hide their disappointment when they found out the school________ the party.
A.
cancels
B.
will cancel
C.
has cancelled
D.
had cancelled
单选题
普通
3. —Why didn't you attend the meeting yesterday?
—Well I ________ anything about that.
A.
didn't tell
B.
haven't told
C.
hadn't been told
D.
haven't been told
单选题
普通
1. A rescue worker risked his life saving two tourists who _________ in the mountains for two days.
A.
are trapping
B.
have been trapped
C.
were trapping
D.
had been trapped
单选题
困难
2. I was sent to the village last month to see how the development plan _______ in the past two years.
A.
had been carried out
B.
would be carried out
C.
is being carried out
D.
has been carried out
单选题
普通
3. Experience of this kind
in both the U.S. and Europe well before the Second World War.
A.
have conducted
B.
have been conducted
C.
had conducted
D.
had been conducted
单选题
普通