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

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问题 Jane had (a great deal of) trouble (to concentrate on) her study (because of) the noise (in the next) room.

选项 A、a great deal of
B、to concentrate on
C、because of
D、in the next

答案B

解析 应改为concentrating on。have trouble doing sth.做……有困难。
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