英语求救1、Both of the books are nice,I can't decide_________A、to

英语求救
1、Both of the books are nice,I can't decide_________
A、to choose which book B、which book to choose
C、which book do I choose D、what book I choose
2、Teenagers need at least eight ________of our studies
A.hour B.hour's C.hours' D.hours's
3、The teacher ask us not to get ______but some students make a lot of _____after class.
A.noise;noise B.noise;noisy C.noisy;noisy D.noisy;noise