163. It was well known that Thomas Edison _______ the electric lamp.

A. 　medicine

B. 　pollution

C. 　environment

D. 　population

A. 　No, I already have plans.

B. 　I＇d love to, but I＇m busy tonight.

C. 　No, I really don＇t like being with you.

D. 　I＇m ill, so I shouldn＇t go out.

A. 　Thank you for telling me

B. 　Oh, dear! I hope you＇ll get better soon

C. 　It isn＇t serious

D. 　It＇ll be better soon

A. 　The same to you.

B. 　That＇s OK.

C. 　 See you.

D. 　 Long time no see.