A lot of experiment work is being done to increase own knowledge about insomnia and other sheep-related problems in order to help people who are（）of sheep.

A. Half an hour.
B. An hour and a half.
C. Three hours.
D. Four hours.

A. The sales increased sharply but overall profits increased slowly last year.
B. The sales increased but the overall profits decreased last year.
C. The company successfully established business relations with some companies in Singapore.
D. The company employed more people from Singapore.