Such animals like dinosaurs died out because they could not _________ to the change of the climate.
| A．suit | B．keep | C．adapt | D．switch |
Look! Xiao Wang is too sleepy to work . He ____ up watching TV .
| A．mustn''t have stayed | B．shouldn''t have stayed |
| C．mustn''t stay | D．ought not to stay |
The streets are all dry . It ____ during the night .
| A．can''t have rained | B．mustn''t have rained | C．couldn''t rain | D．shouldn''t have rained |
I ____ take a job . No one ____ stop me .
| A．will ; shall | B．will ; may | C．should ; will | D．shall ; may |
“When ____ he leave the hospital ? ”I asked the doctor .
| A．will | B．shall | C．can | D．may |
— They haven''t finished the work up to now .
— Well , he ____ .
| A．should have | B．should | C．ought to | D．ought have |