---Where have you been recently? --- I _______ in Hangzhou on business for a week last month.

Generally, students’ inner motivation with high expectations from others ______ essential to their development.

Pompeii _______ by so many tourists that some of the relics are not well protected. 

Up to now, large quantities of food ____ to Africa to save the starving people.

She said her grandmother ______ in 1937.