根据句意，用括号内所给动词的适当形式填空。
小题1:—Why are you walking so quickly? —________ (catch) the early bus.
小题2:—Have you been abroad? –Yes, I ________ (stay) in London for two years.
小题3:If you don’t like the drink you _________(order) ,just leave it and try a different one.
小题4:—What are you doing? --I’m watching a match. It started at 7pm and ________(be) on for another half an hour.
小题5:—Who are you waiting for?-- Andy, he ________(expect) to come here at 3 o’clock. But he has’t come yet.