Good to see you again. It’s almost threeyears _______ we met last time.

―How soon ________ your brother ________ backfrom Guangzhou―In two weeks.

efficiency is one of the top_____in Dockside Green, one of the eco-communities.

p healthy, Professor Johnson_________ cycling as a regular form of exercise after he retired.

Among the 15-year-old children, some ____ studying in university while others are still learning to read and write.