—What about ______ lecture you attended yesterday?
—To tell the truth, it was too boring．I can’t stand ______ lecture like that．
| A．a; the | B．the; a | C．the; 不填 | D．the; the |
– Guess what, we’ve got our visas for a short-term visit to the UK this summer.
– How nice! You _______ a different culture then.
| A．have experienced | B．will be experiencing |
| C．have been experiencing | D．will have experienced |
It was 80 years before Christopher Columbus crossed the Atlantic______ Zheng sailed to East Africa
| A．when | B．that | C．after | D．since |
All of my teachers but the math teacher ______ he cheated in the exam.
| A．doubt that | B．doubts that | C．doubt whether | D．doubts whether |
The teacher told us that everyone has an important role ________in protecting the earth from________.
| A．to play; to pollute | B．to be played; to be polluted |
| C．to play; being polluted | D．to be played; being polluted |
When I enter this classroom, I always feel the ______ pressure of study, for I have so many opponents to compete with.
| A．invisible | B．invaluable | C．insensible | D．impolite |