____ road may lie ahead, that road will take me home.
33. Nowadays, use____of certain waste materials to protect the environment.
32. I suggested that they set off early to avoid (避开) the traffic jam, ____________ no one responded.
31. How to solve the problem __________ in the meeting right now
30. He’s making_____great progress in his lessons that everyone else in his class can’t believe it.
29. When I met him last year in Beijing, he was busy ___________ a new job.