问题

Few people paid full attention to their healthconditions ________ they were seriously ill.

A:when
B:if
C:until
D:after

正确答案是：

同类题型

There_____ to be a wasteland and now stands a building

_______ do you play computer games —Every night.

Do you know if Tom _____fishing in the afternoon—I’m not sure. But if he ____go, I won’t go either.

I fix the bikes and ________

Our master often told us _______ things for granted.[ ]