When it comes to “empty-nest syndrome(综合症)”, parents are advised to _______regular contact with children through phone calls, emails, texts or video chats.
The couple are spending their holiday on __is described as one of the most beautiful islands .
— Do you remember ____________ he came? — Yes, I do, he came by car.
Many people wrote articles on ___Liu Xiang had failed to compete in the event . .
The government has announced that a modern city will be set up in ____is still a wasteland now .
____________ we can’t get seems better than ____________ we have.