补全对话（5小题，每小题2分，共10分）
根据下面的对话情景，在每个空白处填上一个适当的句子，使对话的意思连贯、完整。
(S="Sam;" M=Mary)
S: Hello, Marry. Tomorrow is Sunday, Father’s Day.
M: Oh, I nearly forget it! Thank you for reminding me.
_______________________________?
S: I am going to buy a shirt for my father.
_______________________________?
M: I don’t know.
S: _____________________________?
M: Good idea. My father’s watch didn’t work yesterday. He needs a new one.
S: ______________________________?
M: Yes, I’m free now.
S: ____________________________?
M: OK. Let’s go!