35.His parents wouldn't let him marry anyone__________family was poor.
A. of whom
B. whom
C. of whose
D. whose
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36.We won't give up__________we should fail ten times.
A. even if
B. since
C. whether
D. until
37.Sally couldn't have written to him, or he__________received her letter.
A. has
B. had
C. would have
D. could have
38.It will take a long time__________around the country.
A. to travelling
B. to travel
C. travel
D. travelling
39.Not only I but also Jane and Mary__________tired of having one examination after another.
A. is
B. are
C. am
D. be