John seems puzzled about ________ the question meant.
______he has made up his mind, no one can make him change it.
—I’m going to the United States. —How long ______ you ______ in the United States?
Tom always prefers _________on foot rather than _______ a bike.
—You went to the US last month , didn’t you? —Yes. That was the first time that I________ there.
The engine of the bus was out of order and the bad weather ___ the worries of the passengers .