Scientists are trying their best to_______ ways to treat the terrible disease caused by Ebola(埃博拉）．
| A．come up with | B．look forward to |
| C．talk about | D．give up |
--Would you like to ride bicycles with us tomorrow?
--Yes,I’ll go_____ I’m free.
A.becauseB. whenC. if
The old man warned us_____ here, it’s dangerous.
A.swimB. not to swimC. not swim
Tom used to_____up late, but now hegets used to _____up early and do some exercise in the morning.
A.get; to getB. getting; getC. get; getting
Michael was watching TV_____ his father came in.
A.whenB. whileC. as soon as
--I heard the high-speed train between BeijingandTianjin ran_____350 kilometers a hour.
--That’s right. I’m looking forward to _____it one day.
A.at; takeB. at; takingC. by; take