Mr. Smith had to go to work by bus this morning as his car ______.
Peter has been busy these days and seldom ____ to come over to have a chat with me.
. ---Have you paid your phone bill? --- No, the bill is _____ at the end of the month.
.My reaction towards my classmates at the party was so cold and emotionless ____ I had never been interested in them.
--- Do you mind if I smoke here in the living room? --- Well, if you ___. But I’d rather you didn’t.
China is developing a rural health care service system, ____ I’m sure more residents will benefit.