31.The reason ______he didn’t come was ______he was ill.
A. why； that
B. that； why
C. for that； that
D. for which； what
32.He is working hard， ______will make him pass the final exam.
A. that
B. which
C. for which
D. who
33.That is not the way ______I do it.
A./
B. which
C. for which
D. with which
34.I have two grammars， ______are of great use.
A. all of which
B. either of which
C. both of that
D. both of which
35.I want to use the same tools _______used in your factory a few days ago.
A. as was
B. which was
C. as were
D. which
36.My neigh bours used to give me a hand in time of trouble， _______ was very kind of them.
A. who
B. which
C. that
D. it
37.This is the magazine _______ I copied the paragraph.
A. that
B. which
C. from that
D. from which
38.He is not such a man _______ would leave his work half done.
A. that
B. which
C. who
D. as
39. You can depend on whatever promise _______ he makes.
A. /
B. why
C. when
D. whose
40. Smoking， _______ is a bad habit， is， however， popular.
A. that
B. which
C. it
D. though
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