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

It             be the vocabulary that caused you the problem in the exercise because you know a lot of words.

You __ drive your car so fast. It's very dangerous.

Days later, my brother called to say he was all right, but _______say where he was.

You may get lost easily in big cities like Beijing        you have a map or a guide.