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Thousands of years ago people discovered the phenomenon by chance, and this was _____ the idea of the compass first came from.
#93503
A
how
B
what
C
where
D
that
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      but he still can not understand it.
#92866
A
Told many times
B
Having been told many times
C
He has been told many times
D
Though he has been told many times
If you don’t study hard, you’ll regret, _____ you?
#95190
A
won’t
B
don’t
C
will
D
do
Use your head, _______you’ll work out the problem.
#92490
A
or
B
so
C
and
D
for
As everybody knows，     a person I s，the more things he needs to do tomorrow.
#92495
A
the lazy
B
lazier
C
the lazier
D
the laziest
Are you ______ your son has difficulty in studying at school?
#93991
A
aware of
B
aware that
C
knowing that
D
aware of that