问题

She had just finished her homework ____ her mother asked her to practice playing the piano yesterday
A:when
B:while
C:after
D:since
B:while
C:after
D:since
正确答案是:
同类题型
There are _____ places of interest we could visit in Beijing.
tective, ________ to read a newspaper, glanced atthe man ________ next to a woman.
Would you like some coffee? —Yes, and please get me some milk. I prefercoffee _______ milk.
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