1.she thought i was talking about her daughter,___in fact,i

1.she thought i was talking about her daughter,___in fact,i was taking about mine.
A.whom B.where C.which D.while
2.Neither Tom nor Jack and I his students.
a.are b.am c.is d.was
3.There ___a pen ,tow pencils and threebooks on the desk.
a.are b.is c.has d.have
4.The number of deer ,mountain lions and wild roses ___much if people leave things as they are.
a.doesn't change b.don'tchange c.change d.changed
5.A chemical works ___built there.
a.is to being b.have been c.were to d.has been
6.The olympic games ___held every ___years.
a.is,four b.are ,four c.is ,five d,are.five
重要的是原因!