---- Would you like to go out for a walk with us?
---- ___________.
| A．You may ask your sister to do, too. | B．No, but I can’t afford the time. |
| C．No, I’d like to. | D．No, I don’t feel in the mood for it now |
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 |
. How ____ you be so careless ?
| A．can | B．will | C．would | D．may |
. — 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 |
In three months he ____ speak good English .
| A．can | B．can be able to | C．will be able to | D．may be |
The door ____ lock .
| A．can''t | B．may not | C．won''t | D．mustn''t |