I don’t know _____ he will be back home.
#33403
A
who
B
what
C
when
D
where
推荐题目
I was surprised by what she said, _________made me recognize what silly mistakes I had made.
#31708
A
what
B
that
C
which
D
Who
It’s quite common in Britain to say “Thank you” to the drivers __ people get off the bus.
#33878
A
after
B
since
C
until
D
when
Lucy is a very optimistic girl． she is faced with a difficulty, she always sees the bright side．
#31546
A
Now that
B
Every time
C
As soon as
D
On condition that
____I feel pity on earthquake victims in Sichuan, I can’t really do very much to help them but contribute my pocket money．
#31147
A
As long as
B
When
C
While
D
As