Put on your coat, ________ you may catch a cold.
| A．and | B．so | C．but | D．or |
Sam’s been doing his homework since 8: 00, ______ he?
A. isn’t B. doesn’t C. hasn’t
Most young people find ______ exciting to watch football games.
A. one B. that C. it
Though my grandpa is 60, he’s full of ______ energy and like a young man.
A. a B. 不填 C. an
I want to stop him ________ the window . It’s cold outside.
A. to close
B. from close
C. closing
Boys and girls, keep_____!We should always keep our classroom_____.
A.trying,cleaning
B. try,cleaned
C.trying,clean