You had better book rooms at the hotel in advance _____you should find no room on your arrival.
| A．so that | B．even if | C．in case | D．now that |
--- " ______ he open the door?"
--- "Yes, please."
| A．Shall | B．Will | C．Can | D．Would |
I will certainly be surprised if he ______ to tell them what he knows.
| A．dare | B．will dare | C．dared | D．dares |
_____ you make a little room for me?
| A．Should | B．Could | C．May | D．Must |
I am told that her father is in London and ______ a dry-goods store.
| A．has kept | B．kept | C．keeps | D．had kept |
He ______ English for six years by the time he takes his examination.
| A．was studying | B．would have been studying |
| C．had been studying | D．will have been studying |