2022年英语专四语法模拟练习题第74期
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1.There is no doubt ___ all the flights have been canceled because of the snowstorm.
A.when
B.that
C.why
D.whether
2.___ has been known for about a hundred years, its commercial development has taken place since the beginning of the century.
A.Which
B.While
C.That
D.As
3.The drill has been designed so ___ through the earth to a depth of 35,000 feet.
A.to bore
B.that it will bore
C.as it bore
D.boring
4.Sharon was supposed to be here at 10 o'clock. She ___ about our meeting.
A.would have forgotten
B.should have forgotten
C.ought to have forgotten
D.must have forgotten
5.This may have preserved the elephant from being wiped out as well as other animals ___ in Africa.
A.hunted
B.hunting
C.that hunted
D.are hunted
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