You should make __________your house or flat is secure.选项:a、sureb、certainc、understandingd、 knowledge

You should make a 1.children should make ____ you should listen to the teacher carefully in class and don not make c ____ mistakes. you should think over it ____ you make your own decisionA.beforeB.afterC.thoughD.until为什么不选D One should always______facts（观点以事实为根据） Can you make this wire ____(直的）帮帮忙 改错:You should make a appointment first You should make noise[否定句] you should make a _____ for shopping you should make the safe _____(sucurity) Maybe you should call him up.(改为同义句)Maybe you should ____ him ____ ____ My parents said that I should exercise ____(much)You can't sing in class and you can't make the classroom dirty ______ ____(more)friends you make,____(happy)you'll feel. you should not ____ your parents. You should be ____ (friend) to us. You should ____(get) up early You should keep the baby ____(warm). You should keep the boby ____(warm) Are you ____(make) a cake?