This is Mr. Smith. _______ help I worked out many difficult problems.
#69258
A
whose
B
with whom
C
who
D
with whose
推荐题目
China has hundreds of islands, ___________ is Taiwan Island.
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A
among them the largest
B
and the largest of which
C
and the largest of them
D
but in which the largest
You can’t guess ______ when he was admitted by Beijing University. 
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A
how he was happy
B
how happy was he
C
how happy he was
D
he was how happy