After ____ seemed like hours he came out with a bitter smile.
#72316
A
which
B
it
C
what
D
that
推荐题目
He expressed a hope _______ he would visit China again the next year, and this was the very hope ________ he would express as soon as he arrived in the country.
#73984
A
that; that
B
which; which
C
that; which
D
which; that
He tried his best to solve the problem, _______ difficult it was.
#67486
A
whatever
B
however
C
whichever
D
wherever
It is pretty well understood __________controls the flow of carbon dioxide in and out the atmosphere today.
#74032
A
that
B
when
C
what
D
how