________ is to sing in English.
A. That interests Lily really
B. Which really interests Lily
C. What really interest Lily
D. What really interests Lily
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We were deeply moved by ________.
A. what you have told us
B. which you had told us
C. what you told us
D. that you told us
Electricity is _____ makes the machines able to do their work.
A. that
B. which
C. what
D. such
I believe we must think again about ________ Pro Cook said at the meeting.
A. that
B. what
C. which
D. /
Could you please tell us ________ two computers are the cheapest among these?
A. which
B. what
C. that
D. whether
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