一、将下列句子变为否定句，每空一词。
This is a desk.
This ________ a desk.
Grandpa tells stories to us every evening.
Grandpa ________ ________ stories to us every evening.
He can draw pictures.
He _______ draw pictures.
He has a nice watch.
He _______ _______ a nice watch.
They do a lot of homework at school.
They ________ ________ a lot of homework at school.
You must play football here.
You ________ play football here.
They are having an English class.
They _________ _________ an English class.
Peter goes to the zoo once a year.
Peter _________ _________ to the zoo once a year.
二、下面各句有一处是错误的，请指出并改正。
1. He doesn’t the homework every day.
2. He doesn’t have some rice for supper.
3. This coat are red. That coat is blue.
4. He don’t go to school yesterday.
三、连词成句。
1. playing , like , I , football
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2.aren’t , any , wall , the , pictures , there , on
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3.waiting , bus , for , the , we , are
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4.much , the , how , shirt , is
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