______we were worried about was ________they could manage to control the pollution.
#69123
A
That how
B
That whether
C
What that
D
What whether
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__________for the bus, I heard a noise,
#69550
A
While waiting
B
While I waiting
C
I was waiting
D
Waited
___ he was ill, I was expected to take his place greatly surprised me for I didn't have much working experience.
#73288
A
If
B
That if
C
That
D
If that
Some old Chinese customs, many of you are too young to know, have already died out．
#69475
A
what
B
that
C
how
D
as
Is it true ____ he has suggested is appreciated by his manager?
#68814
A
that what
B
that whether
C
that if
D
what that