The most important thing about cotton in history is ___part that it played in ____Industrial Revolution.
| A．/,/ | B．the,/ | C．the , the | D．a ,the |
The fire spread through the hotel very quickly but everyone ____ get out .
| A．had to | B．would | C．could | D．was able to |
It''s nearly seven o''clock . Jack ____ be here at any moment .
| A．must | B．need | C．should | D．can |
— Could I borrow your dictionary ?
— Yes , of course you ____ .
| A．might | B．will | C．can | D．should |
I talked for a long time , and in the end I ____ make her believe me .
| A．could | B．can | C．must | D．was able to |
— I sent him the dictionary by mail this morning .
—You ____ that; he''s coming tomorrow afternoon .
| A．needn''t have done | B．didn''t have to | C．needn''t do | D．mustn''t do |