His classmates offered him their congratulations ______ his successful performance.
#88210
A
at
B
on
C
for
D
of
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 We started early ______ before dark.
#97967
A
in order to reach
B
in order that arrived
C
so as to arrive  
D
so that got to
____ after a long walk, Henry called me and said he couldn’t come to the meeting.
#95107
A
Having worn out
B
Being worn out
C
To wear out
D
Worn out
Don’t enter the office unless _______. 
#97222
A
you have told to
B
told to
C
telling
D
you are told
—I really appreciate______ time to relax. —I don’t doubt ______ able to do so.
#96811
A
to have;you to be
B
having;that you being
C
to have;you are
D
having;that you are