The students be in the classroom because there are lights in it.

Bring a map of China because you _______ want to travel around.

Miss Taylor never wastes money on anything too expensive, even though (尽管)she can _______ to. She has donated much of the money she saved to charities.

______books aren’t old.______ are new.

Is John coming by train? —He should, but he ________ not. He likes driving his car.