“ATM” is a short form which ________ “automated teller machine”．[ ]

The boy is often heard in the music room. He sings very well.

eting will be held in half an hour,but they haven’t got everything ready_____

Why didn’t you go to the party last night—Because I was waiting for Sam in his office _______ he came back.

I hope you don’t mind my sitting here.— _________. It’s for Mr. Friend.