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【单选题】

It'swellknownthattheearth______aroundthesun.
[ ]

A.
turned
B.
turning
C.
turns
D.
turn
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参考解析:
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【单选题】—Is this your eraser?—_______.[ ]

A.
No, it isn't. It's my eraser
B.
Yes, it is.It's his eraser
C.
No, it is.It's his eraser
D.
Yes, it is.It's my eraser

【单选题】Listen! Someone _____ songs.

A.
are singing
B.
singing
C.
sing
D.
is singing

【单选题】We have two rooms_________, but I can't decide_________. [ ]

A.
to live; to choose which one
B.
lived ; choose which one
C.
to livein ; which one to choose
D.
live ; whichone