Something to save our earth. Do you think so?A. can doB. must doC. has to doD. must be do

发布时间：2020-08-15 02:03:14

Something      to save our earth. Do you think so?
A. can do
B. must do
C. has to do
D. must be done

网友回答

A. can do
B. must do
C. has to do
(答案→)D. must be done
解析：something must be done意为:必须采取措施.
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