not sure what time I’ll arrive, maybehalf past seven or a quarter to eight. _______ ，I’ll be there as early as possible.

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

In my opinion, China has more to deal with the disease of H1N1.— I quite agree with you. Chinese medicine works well.

Bob, are you going to study abroad—Sorry, I’m not_________ about it.

Bob got a job in a firm most famous product is chocolate.