His income is double _____ it was five years ago.
| A．that | B．which |
| C．as | D．what |
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 |
George has arrived, but I did not know he ______ until yesterday.
| A．comes | B．will come | C．is coming | D．was coming |