His suggestion is that we important thing firstly.
A. did
B. done
C. doing
D. do
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I think it necessary we should study hard in all our life.
A. why
B. when
C. what
D. that
The place _______interested me most was the Great Wall.
A. which
B. in which
C. where
D. when
Do you know the boy _______?
A. whom I spoke
B. to who spoke
C. I spoke to
D. I spoke
The pen ______Lily is writing is yours.
A. with which
B. which
C. on which
D. by which
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