What makes you decide to buy a new house in the town —This town is _______ pollution.

my God，I left my portable computer in the taxi!— ______. Let’s call the taxi company first．

(2013·陕西，16)________ is often the case with children，Amy was better by the time the doctor arrived.

I rang you at about nine, but there was no reply.—Oh, that was probably__________I was seeing the doctor.

Everyone was on time for the meeting—_________ Chris,who’s usually ten minutes late for everything