1 . 写出下列句子分别属于哪种基本句子结构
1. We must keep our classroom clean.
2. All of them were amazed.
3. You’d better buy your friends some small gifts.
4. She was reading when her mother came in.
5. Tim refused to help them.
1. We must keep our classroom clean.
2. All of them were amazed.
3. You’d better buy your friends some small gifts.
4. She was reading when her mother came in.
5. Tim refused to help them.
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