I tried all I could_____ the topic at the meeting, but he brought it up.
| A．avoided mentioning | B．to avoid mentioning |
| C．avoiding to mention | D．avoiding mentioning |
People cannot but feel _____, for they simply cannot understand how he could have made such a stupid mistake.
| A．puzzled | B．delighted | C．induced | D．inspired |
What makes the space shuttle _____ is that it takes off like a rocket but lands like an airplane.
| A．exceptional | B．strange | C．unique | D．rare |
Alice was very sorry to hear that her grandmother had _____ two days before.
| A．broken off | B．passed off | C．given away | D．passed away |
Comrade Li Dazhao, _____ librarian of Beijing University, was one of the founders of the Chinese Communist Party.
| A．sometimes | B．sometime | C．some time | D．some times |
The speaker _____ several other subjects in the course of his talk but mostly kept himself to the main topic.
| A．held on | B．worked out | C．touched on | D．kept out of |