The teacher told his students that light ______ faster than sound.
A. was traveling
B. traveled
C. travel
D. travels
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Could you tell me if he ______ to Beijing.
A. has gone
B. had gone
C. went
D. go
Can you tell me ______ ten years ago?
A. where did you live
B. where you live
C. where you lived
Does your brother know ______?
A. where will the team play
B. where will the team leave
C. who will be our team leader
There are so many kinds of MP4 players in the shop. I can’t decide _____.
A. what to buy
B. which to buy
C. when to buy