题目内容

Do you know what___so much greenhouse gases in the air？

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

查看答案

搜索结果不匹配？点我反馈

更多问题

The environment on this planet is worsening, for few people___measures to protect it

A. takes
B. took
C. have taken
D. should taken

When you visit the room, the electronic facilities in it can___and recognize you.

A. interview
B. identify
C. instruct
D. introduce

You___have come to the concert. It was excellent.

A. may
B. need
C. ought to
D. must

Lowering personal production of waste___everyone over the past decade.

A. benefited
B. has benefited
C. benefits
D. benefiting