are these your books?改为单数形式

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• 10道现在进行时态的英语题请将下面的动词改成现在进行的正确形式 (注意有时候是第三人称单数)1. The phone ____. Please answer it. (ring)2. Look! Your baby _____. (smile)3. Listen! Somebody ____ in the next room. (sing)4. Mr Smith _____ a book now. (read)5. The Smiths ______ TV now. (watch)6. Joyce and Joseph _____ a car now. (push)7. A girl and her friends ____ tea at the moment. (drink)8. Slow the car down.
• No, they aren't.改为单数形式
• They have some good books【用he作主语改为单数句】
• 改为单数形式
• ls he your brother?改为复数形式
• she is a good student.改为复数形式 Is your sister quiet?肯定回答
• those are his brothers 改为单数形式 什么 his 什么
• It’s an English book.（改为陈述句）These are arms.（改为单数句） Those are my books.（改为一般疑问
• Please open your books.改为否定句
• The children shouted with j______ at the exciting news.
• 一个球从100m高处*落下，每次着地后又跳回原高度的一半在落下． （1）当它第10次着地时，经过的路程共是多少？ （2）当它第几次着地时，经过的路程共是293.75m．