题目内容

The new type of machine is definitely special and amazing, but it___not be perfect for everyone.

A. might
B. has to
C. ought
D. need

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Whoever lives around that beach___find life there dreamlike.

A. would
B. need
C. shall
D. ought to

To make our neighborhood more beautiful, we needn‘t do much more than make a little___in our daily life.

A. option
B. goodness
C. thing
D. change

Campaigns began in the early 1980s, when people___the negative effects of CO2 emission.

A. realize
B. realized
C. have realized
D. had realized

Do you know what___so much greenhouse gases in the air？

A. producing
B. has produced
C. will produce
D. produces