问题补充：
Nuli told us what he wanted to be a scientist when he 1.
was in his childhood.He worked hard at all his lesson 2.
and tried to enter into a famous university in China, 3.
but he failed because the Cultural Revolution,which 4.
forced him to make a living at the age of 16.He serves 5.
as a farmer then a worker,but he spent his spare 6.
time studied and was finally admitted into a local college. 7.
He often says,“Young guys,do not lose the heart 8.
when you are in trouble.Believe in yourself forever, 9.
so you will surely make great progress sooner or later.” 10.1.what改为that
答案：
(答案→)1.what改为that
解析：
1.what改为thathe wanted to be a scientist是宾语从句,句子成分完整,所以前面的这个连接词应该是that。what引导名词性从句时,需要在从句中作主语、宾语、表语或定语。此题也可把what去掉。因为that引导宾语从句时,可省略。
2.lesson改为lessons根据前面的定语all his可知此处要用复数形式。
3.去掉intoenter是及物动词,后面不需要介词也可跟宾语。
4.because后面加of这个原因状语是一个名词词组,所以要用短语介词because of。
5.serves改为served这是叙述过去的事情。
6.but改为and这一句话的前后是并列关系,并非转折关系。
7.studied改为studying构成spend time doing...句式。
8.去掉thelose heart是习惯用语,heart是抽象名词。
9.yourself改为yourselves此句中的这个反身代词指“young guys”。
10.so改为and这是一个“祈使句+and+结果分句”句式。
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