单选题
When he was in the countryside, he______ visit the poor peasants.
A、
used to
B、
was used to
C、
is used to
D、
had used to
【正确答案】
A
【答案解析】
[解析] 本题考查固定搭配。used to do意为“过去常常”。be used to doing意为•习惯于干某事”。
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