The little boy his seat to an old lady on the crowded bus.
| A．lent | B．offered | C．took | D．brought |
It is easy to ________the differences between them because they have little ____.
| A．say, in style | B．say, in general |
| C．tell, in common | D．tell, in size |
We are covering these __________ girls’ wonderful performances _______.
| A．alive, live | B．lively; alive |
| C．lively; live | D．alive; living |
We all know that learning a skill _________ time and effort.
| A．requires | B．reduces | C．removes | D．repeats |
Man’s understanding of nature is developing ________. It never stays at the same level.
| A．at the right time | B．for the first time |
| C．from time to time | D．all the time |
______ you are middle school students, you should learn to how to look after yourselves.
| A．Though | B．While | C．Since | D．Unless |