问题
Having many helpers makes a task easier and faster to finish.- I think so_______.
A:used to work, used to
B:used to do, is used to
C:used to work, is used to
D:is used to do, is used to;
B:used to do, is used to
C:used to work, is used to
D:is used to do, is used to;
正确答案是：
同类题型
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