__________ your attention focused on practicing, and you can reach your goal of becoming an excellent pianist.
| A．Keep |
| B．Keeping |
| C．To keep |
| D．If you keep |
Circus tigers, although they have been tamed, can _____ attack their trainer.
| A．unexpectedly | B．deliberately |
| C．reluctantly | D．subsequently |
___ is reported that he got severn good medals.
| A．That | B．Word | C．It | D．News |
How long ___ to finish the work ?
| A．will you take | B．will you take | C．you will take | D．will it take you |
___ no need for us to discuss the problem again. It has already been settled.
| A．It has | B．There has | C．It is | D．There is |
He didn't tell us the truth ___ elevent o’clock last night.
| A．until | B．unless | C．since | D．for |