71The teacher gave the students such a difficult maths problem ______ nobody worked it out.
A.as
B.which
C.that
D.so
开始考试练习点击查看答案72____ was expected, he broke his promise once more, ____ let his parents down.
A.It; which
B.As; which
C.It; as
D.Which; which
开始考试练习点击查看答案73In the police station, I saw the man from _____ room the thief had stolen the TV set.
A.whom
B.that
C.which
D.whose
开始考试练习点击查看答案74The Science Museum, ______we visited during a recent trip to Britain, is one of London’stourist attractions.
A.which
B.what
C.that
D.where
开始考试练习点击查看答案75Men are more suited to occupational environments ______ require decisive action while women are better at jobs ______ a considered approach is most important.
A.which, that
B./, when
C.which, when
D.that, where
开始考试练习点击查看答案76The man ______ talked to you just now is an engineer.
A.who
B.whose
C.which
D.what
开始考试练习点击查看答案77The last letter ____ arrived yesterday morning left him______ very sad.
A.which; feel
B.which; to feel
C.that; feeling
D./; felt
开始考试练习点击查看答案78The course normally attracts 20 students per year, _____up to half will be from overseas.
A.in which
B.for whom
C.with which
D.of whom
开始考试练习点击查看答案79________ is often the case with children, Tom was completely better by the doctor arrived.
A.That
B.What
C.How
D.As
开始考试练习点击查看答案80Don"t trust such people _______ praise you to your face but speak ill of you behind your back.
A.who
B.that
C.which
D.as
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