第2个回答 2014-04-21
Where is Sam?——he is in the library,preparing for an exam.
2.my mother and my sister are in the supermaket,buying something.3.be silent,grandpa is sleeping.4.it is eight o'clock now,students are having class.5.hi!is that tom?_no.it is tony,tom is runing in the playground.6.father often reads newspapers in the living room after supper.本回答被提问者采纳