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【单选题】

As we know, s are not ______ ; they do not move comfortably to another place.

A.
flexible
B.
reliable
C.
intelt
D.
convenient
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参考答案:
参考解析:
.
刷刷题刷刷变学霸
举一反三

【单选题】I wondered what great difficulty he had ________ the plan.

A.
to carry out
B.
carrying out
C.
carried out
D.
with carrying out