问题

It will be a long time ______- he returns
A:until
B:before
C:when
D:after
B:before
C:when
D:after
正确答案是:
同类题型
Bill plays basketball for hour every day.
The work _____ in three hours . Let’s hurry.
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The photographer needs to charge up the digital camera every day as the battery quickly.
cut the apple ________, and gave thebig to his little sister.