Don’t get off the bus until it __________.
| A．has stopped | B．stopped |
| C．will stop | D．shall stop |
The science of medicine, _______ progress has been very rapid lately, is perhaps the most important of all the sciences.
| A．to which | B．in which | C．Which | D．with which |
He is _______ to get there in time if he starts right now.
| A．possible | B．probable | C．likely | D．impossible |
—Which day do you think is all right to our next meeting?
—You make _______,_______ day is all the same to me.
| A．one;one | B．it;any |
| C．that; some | D．this; another |
_______,but he still could not understand it.
| A．He had been told many times |
| B．Having been told many times |
| C．Told many times |
| D．Although he had been told many times |
It was very kind of you to do the washing up, but you _______ it.
| A．mustn't have done | B．wouldn't have done |
| C．mightn't have done | D．didn't have to do |