问题
When was it________you let out the secret?[ ]
A: which
B: what
C: that
D: why
B: what
C: that
D: why
正确答案是:
同类题型
________ several years he hasbeen working like this.
The girl who _______ beautiful eyes _______a prize in yesterday’s singing contest.
Clare finally decided to leave the company she ____ for since she graduated from university. [ ]
This morning traffic was ________ by an accident outside the town hall.[ ]