几道英语问题 用所给词的适当形式填空

几道英语问题 用所给词的适当形式填空
1.I think I need a________(difference)car 2.Look at my bike,it's_____enough(colour) 3.Thank you for_____(help)me clean the classroom.4.OK,I think this one is the best,I will____(take)this one 5.That new dictionary is the best,I will_____(take)this one.6.My old car is____(fast)enough,I like it very much.7.This dictionary is too____(thick),I need a much_____(thin)one.