He must be playing computer games at home,isn't he,为何用isn't he?

He____likes playing the pinao becaouse he often reads books about it.a: may be b: may c:must d:maybe He must be playing computer games at home,isn't he,为何用isn't he? —Where ___little Tom be now?—I wonder what he ____.A can;is up toB must;is aboutC may;is dongD must; playing答案是A,不明白 C为什么不行 he must ( )here.《be》 He must be happy! They must be playing反意疑问句 He must be still there,____ A.mustn't he,B.isn't he C.must he.D.is heHe must be still there,____ A.mustn't he,B.isn't he C.must he.D.is he He must be fifty,________?A.mustn't he B.can't C.must he D.mayn't he Maybe能用在句中吗有一道题He______likes playing the piano because he often reads books abou it.A.may be B.may C.must D.maybe答案：D 分析：考查maybe的用法.B、C为情态动词 Simon is crazy about playing video games;now he must be on his computer,__?填反义疑问句. ( C ) 7.— I can’t keep myself active during the day.— You ____ take more exercise.A.must not B.must be C.need to D.needs告诉我这题为什么选c.He spent —— time in playing when he was in the medical college.( ) A.much B.a little C.no D 答案A我选Cwhere______ little Tom be nowI wonder what he _____A can; is up toB must;is aboutC may;is doingD must;playing That must be _____than playing basketball.A a lot more fun B many more fun C funer -- ( )he be at home now -- Yes,he must.The light is on A.Must B.Can C.Does D.Could both he and I ( ) good at playing tennis.A.be B.is C.are D.am He is a foreigner .He( )speak English A.maybe B.may be C.can be D.must be He be watching tv now.yes he be watch tv nowA:__ he be watching tv now B:yes,he __ be watching tv now.A.must can b.can must c.can can d.may must Where is Tony?He ____ in the library.A.are B.be C.must be