单项选择题
He carried the parcel home himself, but he ______ so, the shop could have sent it.
A.did not need to do
B.needn't have done
C.must not have done
D.couldn't have done
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单项选择题
The sun is shining in the sky and sending out ______ light and heat.
A.a large number of
B.a great many
C.a large amount of
D.a lot
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单项选择题
His latest medical study suggests that high blood pressure ______ with unhealthy lifestyles.
A.has something to do
B.have something to do
C.had something to do
D.is having something to do
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