Grandfather doesn’t often So he isn’t good in heath.A．exercisesB．exerciseC．
题型：不详难度：来源：
Grandfather doesn’t often So he isn’t good in heath.| A．exercises | B．exercise | | C．to exercise | D．exercising |
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答案
| B |
解析
试题分析：句意：爷爷不经常锻炼，因此它的健康不佳。结合语境可知本句描述的是反复性动作，故用一般现在时态。句子中已有助动词doesn’t体现时态及人称，故行为动词用原形。选B。
点评：英语中的谓语动词有各种时态，当句子中有情态动词或者助动词时，行为动词一般用原形。 |
举一反三
It usually ____ him fifteen minutes to walk to school.| A．needs | B．spends | C．wants | D．takes |
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I ____ lesson on Wednesday afternoon.| A．play piano | B．play a piano | | C．have piano | D．have a piano |
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I can’t go shopping with you this afternoon. But I’m ____ tomorrow.| A．studying | B．busy | C．leaving | D．free |
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This Tuesday I ____ go to the music club.| A．have to | B．am planning | C．want | D．am visiting |
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James is my friend. She is good at ____ jokes.| A．speaking | B．saying | C．telling | D．talking |
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