It is amazing that the little boy can swim ________the river ________100 meters wide.
| A．across; measuring | B．over; measured |
| C．across; measure | D．through; measuring |
The work ____ be finished in such a short time .
| A．wasn''t able to | B．couldn''t | C．ought | D．could |
— You ought to have called her yesterday .
— Yes , I know I ____ .
| A．ought to | B．ought go have | C．ought have done | D．ought to have called |
Why ____ you keep troubling your mother with such question while he is busy .
| A．can | B．will | C．would | D．must |
How ____ you be so careless ?
| A．can | B．will | C．would | D．may |
____ tennis every day ?
| A．Did you used to playing | B．Did you use to play |
| C．Use you to play | D．Used you play |