I wonder whether the teacher is one of those who _______ to the mountain village to help the children there.
#85644
A
have sent
B
has sent
C
has been sent
D
have been sent
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Half of the workers here ________ under 30 ________.
#86326
A
is;years
B
are;year old
C
is;years old
D
are;years of age
―It’s snowing outside. Why not ____________ it.―Good idea! 
#43854
A
to stop to watch
B
to stop watching
C
stop watching
D
stop to watch