Ever since my brother graduated from the university, he _______ in the present company for 15 years and he is now chief engineer of the company.   [ ]

A. worked  

B. has been working  

C. is working    

D. works

If you can't decide which of the two books to borrow, why don't you take _____?

I won't read them this week. [ ]

A. all

B. any

C. either

D. both