He argued ______ smoking, and insisted that it was ______argument that smoking was harmful to health.
| A．for; beyond | B．against; over | C．for; over | D．against; beyond |
11. Madonna ______ a straight–A student, but it was dancing that she was really crazy about.
| A．must be | B．could be |
| C．must have been | D．could have been |
10. I’m told that languagepractising.com is a free website ______ learners can not just learn various languages but also chat online.
| A．where | B．which | C．that | D．What |
9. 
The flowers were so lovely that they ______ out in no time.
| A．sold | B．had sold | C．were sold | D．had been sold |
8. He was so deep in thought, thinking of the problem ______ he knocked into the tree without noticing it.
| A．when | B．while | C．because | D．That |
7. In Beijing Olympics, Michael Phelps swam into Olympic history, ______ the first athlete to win the most gold medals ever.
| A．became | B．becoming | C．becomes | D．to become |