Whenever I met her, _________ was fairly often, she greeted me with a sweet smile.
#74515
A
who
B
which
C
when
D
that
推荐题目
It was not until dark _____ he found _____ he thought was the correct way to solve the problem．
#68092
A
when; that
B
that; that
C
when; what
D
that; what
The professor could hardly find sufficient grounds _____his arguments in favor of the new theory.
#73299
A
to be based on
B
to base on
C
which to base on
D
on which to base
Clean water and fresh air are essential for our daily life, _______ we can’t live.
#66990
A
by which
B
without which
C
that
D
on which