Nancy had A(a great deal of) trouble B(to concentrate on) her work C(because of)

游客2025-03-13  8

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

选项

答案 B

解析 应改为concentrating on。have trouble doing sth.做……很困难,固定用法。
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