The degree _______ the company is able to cope with the uncertainty of the future is worth studying.
| A．of how | B．to that |
| C．to which | D．on which |
Her composition is well written _______ some spelling mistakes.
| A．except | B．besides | C．beside | D．except for |
“You _______ be so tired that you had to stop to rest．”
| A．should | B．can’t | C．must | D．mustn’t |
He must have finished the work yesterday, _______ he ?
| A．mustn’t | B．haven’t | C．didn’t | D．hasn’t |
He must have lived here for 10 years, _______ he?
| A．mustn’t | B．haven’t | C．didn’t | D．hasn’t |
“Where is it?” “Where is _____? I don't know what do you mean?”
| A．what | B． that | C．where | D．so |