Mr. Green didn’t understand ________ made his daughter so absent-minded this morning.
#93522
A
how that was
B
what was it
C
why it was that
D
what it was that
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He hasn’t slept at all for three days. _____ he is tired out.
#93202
A
here is no point
B
here is no need
C
t is no wonder
D
t is no way
 Parents always _______ great improvement in study ______their children.
#94903
A
expect; for
B
expect; from
C
hope; for
D
hope; with
Please ask the salesgirl ____. 
#93582
A
how much did it cost
B
how much it costs
C
how much it costed
D
it cost how much
This machine is very easy ______. Anyone can learn to use it in a few minutes.
#92224
A
operating
B
to be operating
C
operated
D
to operate