One of the suspects is ____ schoolboy.
| A．an 18-year- old | B．an 18-years-old |
| C．a 18 years old | D．a 18-year-old |
Goldfish don’t know _______ to them three seconds ago.
| A．what happens | B．what is happening | C．what happen | D．what happened |
Does this book belong to ______?
| A．me | B．mine | C．I | D．my |
It ______ him an hour to play basket ball every day.
| A．spends | B．took | C．costs | D．takes |
These aren’t ________ cards. They’re_______
| A．ours, their | B．our, theirs | C．our, their | D．ours theirs |
Turn on the TV, and there is _________.
| A．important something | B．important nothing | C．something important | D．nothing important |