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 |
It's no secret to us, but he alone is in the dark. It means ____.
| A．nobody but him knows the secret |
| B．we all know the secret except him |
| C．it's so dark that he can't see everything clearly |
| D．only the needs to keep the secret |
Every year, ____ graduates take pan in TOEFL for further education abroad.
| A．too much | B．several scores | C．many a | D．scores of |
In order to ____ the debt, the couple has worked hard for years with little food and only a small room to live in and never a moment's rest.
| A．pay for | B．pay back | C．pay | D．return back |
---What do you think of my suggestion?
--- Sorry. What's that? I ____ about something else.
| A．thought | B．am thinking | C．was thinking | D．had thought |
Never did we have to play "stand up", "sit down", "speak out". I don't ____ one student who didn’t try his best.
| A．hear from | B．feel like | C．think about | D．know of |