That hazy(雾霾)weather has hit 104 cities in middle-east China lately makes citizens well aware of ______a terrible problem China is faced with.
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A
what
B
how
C
which
D
that
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______ left when you get to the end of the street. 
#66195
A
Keep
B
Keeping
C
To keep
D
Kept
---It’s time        .---I’m coming, mum.
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A
for breakfast
B
have breakfast
C
for I to have breakfast
D
for have breakfast
— What should I do with this passage?—_____ the main idea of each paragraph.
#66294
A
Finding out
B
Found out
C
Find out
D
To find out
   down the radio. The baby’s sleeping in the next room.
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A
Turning
B
To turn
C
Turn
D
Turned