47.I knocked on his door but nobody came to answer it.

A. 　to get

B. 　to getting

C. 　in getting

D. 　and getting

A. 　Thanks all the same.

B. 　Thanks for calling.

C. 　Not too bad.

D. 　Don't mention it.

A. 　like

B. 　with

C. 　to

D. 　as

A. 　Yes, that's right.

B. 　No. I can't.

C. 　What about you?

D. 　That's a good idea.

A. 　No thank you

B. 　You're welcome

C. 　OK

D. 　Thanks