—Do you know _______he came?—I am not sure.  Maybe for the toy car.
#79091
A
how
B
when
C
why
D
what
推荐题目
We don’t doubt______ he can do a good job of it.
#79096
A
whether
B
that
C
what
D
why
--- Could you tell me      ?  --- Certainly. At 8 o’clock.
#38004
A
when will the train to Beijing leave
B
when the train to Beijing would leave
C
when the train to Beijing left
D
when the train to Beijing will leave