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  3. Anne couldn’t concentrate______what she was doing while her family were watching TV.

Anne couldn’t concentrate______what she was doing while her family were watching TV.

admin2017-12-04  21
问题 Anne couldn’t concentrate______what she was doing while her family were watching TV.
选项 A、to
B、on
C、for
D、in
答案B
解析 考查固定搭配。concentrate on意为“集中注意力于，专心致志于”。句意为“她家人正在看电视，安妮不能集中注意力在自己正在做的事情上”。
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