I_______ laughing when my son made a face.
| A．burst into | B．burst upon | C．burst out | D．burst on |
She brought with her three friends, none of I had ever met before.
| A．them | B．who | C．whom | D．these |
Mike didn’t play football yesterday because he had_____ his leg.
| A．damaged | B．hurt | C．hit | D．struck |
I like getting up very early in summer. The morning air is so good _________.
| A．to be breathed | B．to breathe |
| C．breathing | D．being breathed |
Allen had to call a taxi because the box was _______ to carry all the way home.
| A．much too heavy | B．too much heavy |
| C．heavy too much | D．too heavy much |
A cook will be immediately fired if he is found _______ in the kitchen.
| A．smoke | B．smoking | C．to smoke | D．smoked |