—Did you receive the letter the next day?—No. Somehow, it was three weeks ________ I received it.

Many people in China have never dreamed of ______ a chance for them to learn to drive after their retirement.

______________in his school that many of his fans want to get close to him．

Scientists say it may be five or six years_______it is possible to test this medicine on human patients.

Based on some lawyers’ ideas, the more severe the punishment, ___________.