Mary liked to look back on her high—school days， she thought were the happiest in her life．
#69141
A
that
B
what
C
which
D
when
推荐题目
_______ your diet, it is easy to reduce.
#70490
A
Watching
B
To be watching
C
If you watch
D
To have watched
Alice received an invitation from her boss,__________came as a surprise.
#71835
A
it
B
that
C
which
D
he
It is no longer a problem _______ the poor children in this district can go to school.
#73292
A
that
B
whether
C
so
D
because
______ the bad weather, the children had to stay home all day.
#69360
A
Because of
B
Because
C
Because that
D
Because what