问题

In the old days he work day and night to make a living.

A:had to
B:was able to
C:could
D:must;

正确答案是：

同类题型

Some _________ are flying kites near theriver

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Only when we begin our college life______the importance of English.

Are you still mad at her?—Not really, but I can’t ______ that her remarks hurt me.

able, the proposal heattractedmuch attention．