“I’m sorry that you’ve missed the last bus. It _______ only five minutes ago.” said the man.

They wanted to buy some cards for their teachers, butthere were _______left in the shop.

Don’t offer the runners water or any help ______ they ask for it.

Who’s your Chinese teacher?–Miss Zhang. She has taught______ Chinese for two years.

he world economy growing weaker, for many youngpeople, the dream of landing a good job is becoming harder and harder ________