David got well-prepared for the university interview, for he couldn’t risk the good opportunity ________.
| A．to lose | B．losing | C．to be lost | D．being lost |
It is said that his carelessness ____ the terrible accident.
| A．resulted from | B．resulted in | C．turned out | D．worked out |
Tom as well as his friends ____ to visit our school soon after they arrive in Changsha.
| A．is coming | B．are coming | C．will have come | D．has come |
By the time you ____ in, I ____ two letters.
| A．had come, had written | B．came, wrote |
| C．come, have written | D．came, had written |
To ____ your dream of becoming a scientist, you must work hard from now on.
| A．turn | B．recognize | C．live | D．change |
I suggest ______10% of the bill for the waiter or waitress if a tip isn’t included.
| A．to leave | B．leave | C．being leaved | D．leaving |