There are five _______ on the floor.
| A．pieces of papers | B．pieces of newspapers |
| C．piece of papers | D．newspapers |
__________ should not be allowed to go out alone at night.
| A．Twelve-year- old | B．Twelve-year- olds | C．Twelve year old | D．Twelve years old |
—I think teenagers should _______ to drive. They are not serious enough.
| A．be allowed to | B．not be allowed to | C．not allow to | D．allow to |
I fell down and broke three of my teeth. I wonder how many times I have to come here to get my broken teeth _______.
| A．fix | B．fixing | C．fixed | D．to fix |
—What do you usually do in the morning?
－ I often practice__________ English.
| A．speak | B．to speak | C．speaking | D．spoke |
Eric is so careful that he always looks over his exercises to ________ there are no mistakes.
| A．make sure | B．find out | C．think of | D．look for |