按要求进行句式转换，每空一词。
（1）I like dumplings. (变一般疑问句)
_______ _______ like dumplings?
（2） We are going by train.(变否定句)
We _____ going by train.
（3） Do you have a nice trip? (作肯定回答)
Yes，_______ _______.
看图，完成对话。
A: ________ this?
B : It's a ________ .
A: Whose ________ is it?
B : Guess.
A: Is this ________ ________ ?
B : No, it's ________ my________. It's Helen's.
A : I see.
听录音，完成对话。
A: What's ________ ? B : It's a ________ .
A: ________ I ________ a look? B : ________ .
A: I'd like this ________ ,________ . B：________ you________ ．
A：________ ________ ．
Which letter is missing?
E R T？ U I O?="________"
看图，完成对话。
A : How are ________ today.?
B : Not so ________ .
A : ________ the ________ ?
B : I'm ________ .
A : Here's a ________ for ________ .
B : ________ you.
看图，完成对话。
A : Hi, Helen.
B: Hi.
A: ________ you thirsty?
B: No, I'm ________ .
A : Let's ________ home now.
B: OK.