No one can imagine the difficulty hehad _______ his son to get rid of the habit of playing computer games.

Could you tell me how to get to the Yellowstone National Park from here——_________. Maybe you can ask the policeman over there.

It is out of question that you ____ Chief Engineer of the railway when Mr. Bell leaves. [ ]

e meeting he gave us somesuggestions, one of which was that we____ someone to check the information.

_____did you get to school–By bus.