To succeed in doing an experiment,________.
#94929
A
carefulness is needed
B
carefulness is one needs
C
one needs to be careful
D
one need be careful
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Come and visit me whenever _______.
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A
you are convenient
B
you will be convenient
C
it is convenient for you
D
it will be convenient for you
_______ work did we have to do that we were so exhausted.
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A
Too much
B
So much
C
Too little
D
So little
–I think it’s going to be a big problem.--Yes, it could be. --I wonder ________ we can do about it.
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A
if
B
how
C
what
D
that
We can hardly believe his excuse for his late show _______ his car broke down halfway.
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A
why
B
that
C
where
D
as
—Oh, dear! I forgot the air tickets. —You ______ something.
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A
have left
B
are always leaving
C
are leaving
D
always left