What’s the matter with the man hanging his head there?—Well，if you ________ know, he was caught stealing my bike.

―He’s never advised to achieve a balance between his job and hobbies, ________―Yes. His parents and teachers often offer him some advice.

The airport is far from here，and there on time，you’d better take a taxi.

The Columbia has finished the task in the International Space Station and is reported to come backto the earth tomorrow, or to be more________, at 3: 32 p. m.local time.[ ]

I wonder why Mary is so unfriendly to us. —She is ________ than unfriendly, I’m afraid.