单项选择题

Nancy had (a great deal of) trouble (to concentrate on) her work (because of) the noise (in) the next room.（）

A．a great deal of
B．to concentrate on
C．because of
D．in

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单项选择题

No matter (whatever happens), we're determined to (do our best) and (make) the experiment (a success).（）

A.whatever happens
B.do our best
C.make
D. a success

单项选择题

She became (angrier) as the years went (on) because she saw (that) they were doing to (other)youngsters.（）

A．angrier
B．on
C．that
D．other

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