Question

I want to know ________ next.
A. what to do it    B. how to do    C. what to do

Answer 1

C

試題分析：what可充當賓語，故不定式后不可再加賓語，所以A.what to do it 錯誤，去掉it就對了，故選C。而B選項中how是副詞，不可充當賓語，故不定式后應補賓語it。考點：
點評：類似的結(jié)構(gòu)還有：where to go, when to do sth.