题目内容
20．In the past few years，many schools__the ways of doing morning exercises．（ ）| A． | change | B． | changes | C． | will change | D． | have changed |
分析 过去的几年里，许多学校已经改变了早操的方式．
解答 答案：D．结合In the past few years可知动作发生在过去，对现在造成一定的影响，故用现在完成时have/has+过去分词，主语schools，故have，故答案是D．
点评 现在完成时有两种用法1．过去发生的某一动作对现在造成的影响或结果或到现在为止已经发生或完成的动作．2．表示过去发生的、持续到现在的动作或状态．
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Dear Abby，
I'm a helpless mother of a teenage boy．My son is going to be 15this summer．He used to help me（71）Dthe clothes or do the dishes at home．But I find that the older he grows，the（72）Bwe talk．We can't get on well（73）Ieach other．I feel very sad and I really need help．
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（77）E，he likes new technology （科技）．It seems that he tries very hard to keep up with his classmates on the new technology．But I don't have enough money and I can't（78）Fall the things he wants．
Recently，I've found he is always（79）K．I've never seen him talking to his friends on the phone or hanging out with（80）Jon weekends．That's the last problem I have．
What should I do to help him？Please give me some advice．
A helpless mother．
| A．worried | B．less | C．spends | D．fold | E．Secondly | F．provide |
| G．turns on | H．little | I．with | J．anyone | K．alone | L．lonely |
I'm a helpless mother of a teenage boy．My son is going to be 15this summer．He used to help me（71）Dthe clothes or do the dishes at home．But I find that the older he grows，the（72）Bwe talk．We can't get on well（73）Ieach other．I feel very sad and I really need help．
My first problem is about his hobbies．He（74）Calmost his spare time on computer games．When he gets home，he always（75）Gthe computer and closes the door．I'm getting more and more（76）Aabout him，especially when his English teacher tells me he hardly ever gets good grades in the English exams．
（77）E，he likes new technology （科技）．It seems that he tries very hard to keep up with his classmates on the new technology．But I don't have enough money and I can't（78）Fall the things he wants．
Recently，I've found he is always（79）K．I've never seen him talking to his friends on the phone or hanging out with（80）Jon weekends．That's the last problem I have．
What should I do to help him？Please give me some advice．
A helpless mother．
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