Our teacher often tells us ____ the windows before we leave. 
#56359
A
close
B
closed
C
to close
D
closing
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We can’t put off _____ a plan .
#55162
A
make
B
to make
C
making
D
to making
Li Ping ______ a happy family.
#61173
A
is
B
have
C
has
D
there is