The machine has been used many years_____ it doesn’t work well occasionally.
| A．That’s because | B．It’s no wonder that |
| C．There’s no doubt if | D．It’s unlikely that |
These citizenship ceremonies on Australian Day are intended to encourage ____, respect and promote friendship among people of different cultural and social backgrounds.
| A．reservation | B．endurance |
| C．tolerance | D．expedition |
Such plants, particularly___ to collectors, motivated them to explore on a large scale.
| A．appealed | B．attracted |
| C．appealing | D．attaching |
Only when he returned home ______ what had happened.
| A．did he realize | B．he realized |
| C．he did realize | D．has he realized |
34. He was fortunate ____ he did not get injured in the car accident.
| A．but that | B．except that |
| C．because of that | D．in that |
33. He hasn’t decided _____ he will go abroad next year.
| A．whether | B．when |
| C．where | D．why |