选择正确的选项，补全对话
A.Why are you so happy?
B.Don’t be sad.
C.He is too tired.
D.Great! I am so excited.
E.So do I.
1．—Nice to see you!
—Nice to see you, too. Our classroom is new and big!
—______
2．—Why do you look so upset?
—Because my new toy is missing.
—______ Let’s look for it.
3．—Where is Baobao?
—He is in bed.______
4．—______
—Because my dad buys me a pet. It’s a baby dog.
5．—I like our new books.
—______
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