He ___ be in the room .The light in the room is not on.A.mustn't;B.can't答案是B,A为何不可?

He___(stand) on the ___(start) line and I ___(stand) on the___(finish) line,who is in my__(lire)roo My brother ___(join) the army when he ___ (be) 20 and he ____(be) in it for 5 years He ___ in the morning. He must be in the room,___ he? 如何做?为什么? he acted in many films since he became famousthe films ___( be )populer around the world where is John,Tom?he ___(must be,can be )in the library one of the theme parks ,he can go to ___ (be) disneyland in the USAWHY Tom can sing very well,he can ___(be) in the singing club. by June next month,he ___(be) in hospital for two months for the accident he can ___ the basketball club 空中填is in还是are in还是be in还是is at? 英语题目,汉译英他过去对唱歌不感兴趣.He ___ ___ to be ___ ___ singing.教室前面以前有一棵大树吗?___ there ___ ___ ___ a big tree in front of the classroom? He is often ___ in the davtime 1.He might be running ___(catch) a train 2.She could be ( )(shop) in the supermarket 英汉互译 1.be late 2.keep the roo clean and tidy At first he didn't like the hot food in Sichuan.Three weeks later be liked it.(改为同义句)___ three weeks he ___ ___ ___ the hot food in Sichuan. he__( act ) in many films since he became famous.the films ___(be) popular around the world.r He ___ ___[choose]what to do in the future He usually ___(run) in the park in the morning.