当你的同学拿着3本书，问你这是多少本书时，你的回答应是：A. Four books .B. Three books .
( ) The man sitsunder the tree.
( ) The mouse is front of the cat.
( ) first, I fell over. But it didn’t hurt.
( ) Chinese people invented.
( ) There a book and two pens in the bag.
under the tree.
front of the cat.
first, I fell over. But it didn’t hurt.
.
a book and two pens in the bag.
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