They are arriving ________ Shanghai next Monday.
When I passed the river, I saw some children ______ on the sand.
Mike take a bus to the office, but now he walking there.
My uncle the club in 2010. He the club for over 3 years.
—Why don’t you go to visit the Great Wall with us?—Because I _______ there many times.
— John, you ____ the computer game for two hours. It’s bad for your eyes. Stop, please!—OK, Mum.