Although he is really heavy,   he still runs fast.
#57109
A
/
B
but
C
and
D
so
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____ he was very tired, he didn't stop to have a rest.
#56214
A
But
B
As
C
Because
D
Although
Don't worry! I'll send you an e-mail_______.
#56146
A
as soon as possible
B
as soon as possibly
C
as soon as can
D
as quick as possible