练习：
1. We are going __________(camp) this Sunday.
2. Liu Hong is the _______ (twelve) one to come here.
3. Will you please show all your__________(photo) to me.
4. Let’s go bike ______(ride) this weekend.
5. The children couldn’t wait ___________ ( watch) the match.
6. They are going ________(fish) next Sunday.
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