---John has put forward______ most challenging question for us to answer.
---Yes, it really is. I have never heard______ harder one.
| A．a; the | B．the; the | C．a; a | D．the; a |
–Jane called to say that she couldn’t come to your birthday party this Saturday night.
–______ David has been expecting to see her for ages.
| A．What a shame! | B．How could she do that? |
| C．That’s terrible! | D．I don’t care. |
If _______, I’ll show the committee what I have found out about the matter.
| A．permitting | B．being permitted | C．permitted | D．having permitted |
Fuzhou-Quanzhou-Xiamen high-speed railway has been running for more than a year. ______, fewer people take the trip by bus.
| A．In addition | B．As a result | C．Besides | D．On the other hand |
I wonder whether this student has ______ it takes to be a music major.
| A．what | B．how | C．which | D．when |
–A boy was killed by the tiger in the zoo.
–He was believed ______ into the cage while feeding the tiger without permission.
| A．to fall | B．to be falling | C．to have fallen | D．having fallen |