It is uncertain side effect the medicine will bring about, although about two thousand patients have taken it．
| A．that | B．what | C．how | D．whether |
The Most Beautiful Village Teacher, hosted by CCTV, honors the teachers __________valuable contributions are worthy to be respected by every Chinese.
| A．of whom | B．of which | C．that | D．whose |
— Pity you missed the lecture on nuclear pollution.
— I____ it, but I was busy preparing for a job interview.
| A．attended | B．had attended |
| C．would attend | D．would have attended |
—I hear that Jason is planning to buy a car.
—I know. By next month, he _enough for a used one.
| A．will have saved | B．will be saving |
| C．has saved | D．saves |
---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 |
Never for one moment, believe it or not,_______ being faced with such a situation where a helping hand was greatly needed.
| A．I imagined | B．do I imagine |
| C．I have imagined | D．had I imagined |