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    ，please start the work tomorrow.
#91931
A
If you are convenient
B
If it is convenient for you
C
If it is convenient of you
D
If convenience
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It will be more than 100 years ____ the country begins once again to look as it did before.
#93228
A
when
B
since
C
before
D
that
I think it is unfair, ___________?
#93463
A
do I
B
is it
C
don’t I
D
isn’t it
I don't doubt ______ he will pass the tomorrow’s exam.
#92903
A
that
B
whether
C
if
D
which
Don’t be discouraged．_______ things as they are and you will enjoy every day of  your life．
#92984
A
Taking
B
To take
C
Take
D
Taken
Seeing the car trapped in the snow drift, the driver didn’t know ______ it.
#94921
A
how to do
B
what to do
C
how to deal with
D
how to do with