If that -----,...

If that _____,...1.I _____ my bag in my classroom yesterday afternoon.A.forget B.forgot C.left D.will leave2.If that _____,I won't go back to that shop again.A.happens B.happening C.happened D.to happen3.They _____ to the zoo at five yesterday afternoon.A.reached B.arrived C.got D.arrived in4.--How much _____the shoes?--Five dollars _____ enough.A.is;is B.are;is C.are;are D.is;are5.I want to know _____ do to help my neighbour.A.what I can B.shat can I C.how I can D.how can I6.--Could you please tell me _____ --I live in Yan'an.A.where do you live B.where you live7.Health is very imoirtant to us.We should eat more vegetables and fruit instead of _____ rich food.A.too much B.much too C.very much