The purpose of new inventions is _______ life more difficult, but to make it easier.
#48430
A
not make
B
not making
C
not to make
D
do not make
推荐题目
Would you mind ________ the noise here? The baby is sleeping.
#51327
A
not to making
B
not to make
C
not making
D
to not make
Students should do everything they can __their study. 
#50600
A
improve
B
to improve
C
improving
D
improved
Would you mind _______ the window for me? I feel a little cold.
#50142
A
opening
B
closing
C
to close
D
to open
 When I walked past his house, I heard him _______.
#50226
A
to sing
B
sang
C
sings
D
singing