---Has Peter handed in his paper yet?
---I’m not sure．He _______ on it last week．
A．was working B．has worked
C．worked D．had worked
The biggest problem for most plants, which ______ just get up and run away when threatened, is that animals like to eat them．
A．can’t B．shan’t
C．needn’t D．mustn’t
---Have you called Mr Johnson’s office?
---Yes．He ____back before tomorrow noon．So he can attend our meeting on time．
A．expected B．is expected
C．is expecting D．is to expect
Word comes _____ free books will be given to ______come first in this book fair．
A．which,no matter who B．that, anyone who
C．which,whoever D．that,those who
The fire _______ before the fire-fighters arrived．
A．has been put out B．was put out
C．had put out D．had been put out
With some snow on top of it,the Yellow Mountain looked fantastic this winter．Actually, I doubt whether we could visit ______mountian in China．
A．a most beautiful B．the most beautiful
C．a more beautiful D．a beautiful
