It was never clear _____the man hadn’t reported the accident sooner.
#68996
A
that
B
how
C
when
D
why
推荐题目
The hall __ we saw the film was very clean.
#71573
A
that
B
which
C
in which
D
in that
Can you make sure _____________ the gold ring? 
#74043
A
where Alice had put
B
where had Alice put
C
where Alice has put
D
where has Alice put