单项选择题

The oil must have been used up, () the light went out.

A. because
B. for
C. since
D. as

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单项选择题
He kept playing the same record () until I had to leave the room.

A. now and again
B. now and then
C. over and over
D. far and wide
单项选择题
The rain was heavy and () the land was flooded.

A. consequently
B. continuously
C. constantly
D. consistently
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