—How unhappy your roommate looks!—Yes, but he's not willing to tell me what it is ________ is troubling him.
#84716
A
what
B
which
C
as
D
that
推荐题目
It was at the gate of our school ____we gave the visitors a warm welcome.
#84891
A
where
B
how
C
that
D
/
It was only when I reread his poem recently _____ to appreciate its beauty.
#85266
A
that I began
B
did I begin
C
I began
D
until I began
15. It was with great joy _____ he received the news ______ his lost daughter had been found.
#85524
A
because, when
B
which, that
C
since, how
D
that, that