I___ the problem, ___.
[主观题]H.e thinks he can pass the exam.(改为否定句)__________________
[主观题]1 like the blue sweater,(改为否定句)________ ________ ________the blue sweater.
[主观题]That is a bag.(改为否定句)________ ________a bag.
[主观题]That is my watch.(改为否定句)________ ________ my watch.
[主观题]These are math books.(改为否定句)These_________ _________math books.
[主观题]A.ll of the students like football.(改为否定句)_____ of the students _____ football.
[主观题]Those maps are on the wall.(改为否定句)Those maps_________ on the wall.
[主观题]B.oth Mary and John are students.(改为否定句)
[主观题]③他今天必须去上班。改为双重否定句:______
[单选题]This problem is _____his ability and I don’t think he can solve it.A.ToB.in