Great changes in every field _____ in the last ten years.
| A．take place | B．took place | C．have taken placed | D．had taken place |
So _______________ at the sight of the monster that he could neither move nor scream.
| A．frightenedTomwas | B．wasTomfrightened |
| C．frighteningwasTom | D．frightenedwasTom |
Lucy is believed to have been killed by a vampire. She was seen ________ Dracula’s castle last week and has never come out.
| A．enter | B．toenter |
| C．entering | D．entered |
I can’t promise that all the people injured in the accident will be saved. All I can promise is that what _______ be done _______be done.
| A．must,should | B．can,can |
| C．will,must | D．can,will |
You _______ get the book on condition that you give it back to me on time.
| A．should | B．must | C．ought to | D．shall |
I would like to _____ this book _____ all those who are interested in traveling.
| A．refer, to | B．prefer, to |
| C．recommend, to | D．deal, with |