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1.I have caught a bad cold these days.

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1.I have caught a bad cold these days.
2.He has bought a jacket for a week.
3.She has put her handbag in the room two hours ago.
4.I’ve never gone to the Great Wall before.
5.While I get to the airport,the plane had taken off.
1.I have caught a bad cold these days.
1、A、应改成:have had ,现在完成时have/has后面加延续性动词,而caught是瞬间动词
2、B、应改成:had,理由同上,bought瞬间动词
3、A、应改成:/,……ago用于一般过去式
4、C、应改成:benn,have gone to指去了没回来,have been to 指去了回来了
5、AB都有点错吧,改成:When …… got ,while 用进行时态,when 的话主过从过
我感觉题目有点问题,你最好再看一下