—I wonder why Sara looks worried today.
—I'm not sure，but she a small accident driving here.
| A．could have | B．might have |
| C．might have had | D．must have had |
---Mum, it is nice weather. I want to skate this afternoon.
---Don’t you think the ice on the lake is too thin to your weight?
| A．stand | B．bear | C．catch | D．take |
Tom, yourself. Did you forget the school rules?
| A．behave | B．believe | C．perform | D．conduct |
The boy was made to the explanation(解释，说明 process of explaining) .
| A．speak | B．tell | C．repeat | D．say |
As we grow older, birthdays seem to more quickly than when we were children.
| A．come in | B．come around | C．come out | D．come over |
Sports and games can _ our bodies
| A．bring up | B．set up | C．put up | D．build up |