---Why does Tommy look unhappy ? --- Because his teacher makes him _______ the classroom all by himself .
#50728
A
to clean
B
clean
C
cleans
D
cleaning
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The purpose of new inventions is to make life easier, it more difficult.
#48658
A
not make
B
not making
C
not to make
D
do not make
He feels lonely because he has no close friends ____.
#48654
A
to talk
B
to talk with
C
talking
D
talking with