皮皮学，免费搜题
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搜题
【单选题】
The author’s purpose in writing this passage is to explainA.
why it is necessary for us to help others
B.
how to help others
C.
who most need help
D.
what community service is
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皮皮学刷刷变学霸
举一反三
【单选题】What kind of things do people often buy during _____ Christmas and _____ Spring Festival?
A.
/ ; the
B.
the; /
C.
the; the
D.
/; /