1.( ) not ( ) on that broken chair.(sit) 2.Please ( ) the bi

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1.( ) not ( ) on that broken chair.(sit) 2.Please ( ) the biackboard,Helen.(clean)
3.( )999 at once when there is a fire.(dial)
4.I can not ( )out any mistakes in that letter.(letter)
5.Mother ( ) me a shory tonight.(read)
6.Please ( ) the litter girl for her carelessness.(forgive)
7.The cat ( ) itself after every meal.(wash)
8.( ) you fond（喜欢）of singing?(be)
9.Nurses(护士)( ) after sick people.(look)

1、2、3、6祈使句,表命令,用动词原形,否定句中,Don't 放句首.答案如下：

1、祈使句（Do） not （sit）.
2、祈使句 clean
3、Dial (句子开头单词的首字母要大写)
4、find (和out搭配,表发现,找出来),情态动词can+动词原形
5、reads (主语妈妈是第三人称,谓语动词用单数形式,加s或es)
6、祈使句 forgive原谅
7、washes (主语cat是第三人称,谓语动词用单数形式,加s或es)
8、Are (和you搭配的be动词是are, 又是句首首字母,故要大写首字母)
9、look (look after照顾,主语护士是复数,故不用单数形式)

sit on the chair The chair is broken,so it is _u________ to sit on 是sit on the chair还是sit in the chair The conductor does not want the dog to sit on the chair.中文 1.they sit on the chair and read newspapers every evening.2. sit it on sit on it sit on the chair sit the chair on 以上哪种说法 I sit (at/on)the chair Sit down on the chair.是什么意思 Sit on your chair!Now the chair is ______ you. 做在椅子上是还sit on the chair 还是sit on the chair Pam is on the ship.She sit on the chair. 坐在椅子上用sit on the chair 还是sit in the chair