She looks tired and ___ have a rest. A. need to B. needs to C. needs D. does to needShe looks tired and ___ have a rest. A. need to B. needs to C. needs D. does to need我知道选B但是为什么选B

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She looks tired and ___ have a rest. A. need to B. needs to C. needs D. does to needShe looks tired and ___ have a rest. A. need to      B. needs to   C. needs        D. does to need我知道选B但是为什么选B
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She looks tired and ___ have a rest. A. need to B. needs to C. needs D. does to needShe looks tired and ___ have a rest. A. need to B. needs to C. needs D. does to need我知道选B但是为什么选B
She looks tired and ___ have a rest. A. need to B. needs to C. needs D. does to need
She looks tired and ___ have a rest.
A. need to B. needs to
C. needs D. does to need
我知道选B但是为什么选B

She looks tired and ___ have a rest. A. need to B. needs to C. needs D. does to needShe looks tired and ___ have a rest. A. need to B. needs to C. needs D. does to need我知道选B但是为什么选B
she是第三人称,后面动词应为第三人称单数,排除A.
need有个固定搭配:need to do sth
D选项的话,do 作为助动词,在这里没有does to need的用法
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与LOOKS 一致, 排除 A
NEED 作为实义动词人作主语后接TO DO STH
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she是第三人称,后面“looks tired”与“_ a rest”是并列的,所以“-”是单数动词,不是“B”就是“C”或“D”,然后句型need to do sth.需要做某事,就选了B。D的话,要表示强调应该用“does need to”。