【题目1】—Sorry I'm late.I got stuck in traffic.
—______.You're here now.Come in and sit down.
A.You are welcome
C.I have no idea
【题目2】It doesn't matter ________ you pay by cash or credit card in this store.
【题目3】He smiled politely ______ Mary apologized for her drunken friends.
【题目4】If we _______ adequate preparations, the conference wouldn't have been so successful.
【题目5】— I don't know about you, but I'm sick and tired of this weather.
— _________. I can't stand all this rain.
A.I don't care
B.It's hard to say
C.So am I
D.I hope not