题目
第1题
Closed questions are less powerful than open-ended questions in keeping a conversation flowing.()
第3题
A.from; from
B.of; of
C.of; from
D.from; of
第8题
A.out from
B.away from
C.to from
D.up from
第9题
A.except from
B.yet from
C.however from
D.but from
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