写出完整形式。(（4）分)
（1）I'm ______________ （2）it's_____________ （3）isn't ____________
（4）can't_______________（5）let's ____________ （6）aren't___________
（7）they're __________ （8）doesn't _____________
看图，完成对话。
A: ________ , Mr Ma.
B: Hello.
A: How ________ ________ today?
B: ________ so good.
A: What's ________ ________ ?
B: ________ tired.
A: ________ ________ , please.
B: Thank you very much.
看图，完成对话。
A: ________ the ________ ?
B : It's ________ .
A: It's ________ to ________ ________ .
B: Yes, it's ________ .
A: Let's hurry.
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?="________"