4．-Why ______ there doing nothing when you can lend me a hand，Michael？
-Sorry，Mom．（　　）
A．to standB．standingC．standD．what

分析 ---Michael，你能幫我一把，為何站在那不動(dòng)？
---抱歉，媽媽?zhuān)?/p>

解答 答案：C
分析句子結(jié)構(gòu)可知，"when you can lend me a hand，Michael"是when引導(dǎo)的時(shí)間狀語(yǔ)從句，所以"Why ______ there doing nothing"為主句．其中缺少謂語(yǔ)動(dòng)詞，故用stand．

點(diǎn)評(píng) 考查謂語(yǔ)，考生需對(duì)句子結(jié)構(gòu)進(jìn)行分析，找出缺少成分，再判斷哪些形式可以做謂語(yǔ)．

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