问题
选择题
. ________ others whenever you can and you will make
the world a nicer place to live in.
A．Help
B．Helped
C．To help
D．Helping
答案
答案：A
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. ________ others whenever you can and you will make the world a nicer place to live in.
A．Help
B．Helped
C．To help
D．Helping
答案：A