Why can't a market be defined too broad or too narrow?

Why can't a market be defined too broad or too narrow? You can't play football here .-_______?A.Why B.Why not C.how I can't understand_____the boy along A why she left B why did she leI can't understand_____the boy along A why she left B why did she leftC why had she left D why she had left why i can't find a bf I can't understand ( ) the boy alone last night. A.why she left. B why did she leaveC why has she left. D why she has left 7.---Why are you crying? ---I just can’t help7.---Why are you crying?---I just can’t help ____.A. so B. that C. it D. them We can't play here.A.Great B.Come hereC.Of course D.Why not ( )old people don't need is a gift they can't use.A.That B.When C.Why D.What Can I have a look at your new shoes?A.why not B.But you can't touch them C.Excuse meD.I can't agree with you i can't understand the reason____ you don't like him A that B why Cwhich D what Why _______ go bike riding with us?why _______ go bike riding with us?A.don’t B.not C.is D.can’t说出理由 you___jump onto a bus___it is still moving,It is too dangerous.A.can;while B.must;whenC.can't;when D.mustn't;whileTell me why? Why _ it rain on Sunday We can't go camping .What a pity!A.should B.must 英语 ..kuai...1.You must be tired.____stop___?A.Why not ;having a rest B.Why don't you,having a rest C.Why not;to have a rest D.Why not you;to have a rest2.My father hopes you___come to my home .A.will can B.are can C.can will D.will be able to3.T I can't go out _____ Mr Smith comes back A until B that C why D whereI can't go out _____ Mr Smith comes backA until B that C why D whereI can't go out _____ Mr Smith comes backA until B that C why D whereI can't go out _____ Mr Smith comes backA unt China is larger than___country in AfricaA.anyB.allWhy is B?Why can't we use A?I THINK SO He can't answer the question__ he got the money.A.that B.why C.how D.whether选?为什么? I don't know____kind if work I can do.A.how B.what C.who D.why