题目内容
（请给出正确答案）
[主观题]
It used to______that sugar could decay the teeth.
A、be believed
B、believe
C、believing
D、being believed
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A.are used to
B.used to
C.use to
D.were used to
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第3题
They（) good friends and often visited each other.
A.are used to
B.are used to be
C.used to be
D.used to being
第4题
Every possible means ______ to prevent the air pollution but the sky is still not clear. A．is used
A.A.is used
B.B.are used
C.C.has been used
D.D.have been used
第5题
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A.is used to producing
B.is used to produce
C.used to produce
D.used to producing
第6题
—Have you ___________ drinking？—Not yet.
A.been used for
B.got used for
C.been used to
D.got used to
第7题
Jack （) a walk after supper when the weather was fine.
A.used to take
B.is used to take
C.used to taking
第9题
Vingo and his family _____ in Brunswick, just before Jacksonville.A.used to liveB.used
A.used to live
B.used to living
C.were used to living
D.got used to live
