1.There is ____"a"and_____"s"in the word "as" 选项有（A：an;an B：a;a C：a;an ）
2.Don't worry _____ it.I will help you _____ it.选项有(A：with;about B：to;of C：about;with)
3.My dog is _____.选项有(A：black and white B：a black C：a green and grey)
4.--Clean the blackboard,Tom.---________.选项有（A：That's right B：That's all right C：All right）
5.This is _______my new purple bag.选项有（A：a B：不填 C：is）