It is clever ______ you ______ out the problem.
| A．for; to work | B．of; working | C．for; working | D．of; to work |
I'm 13 years old and my sister is 15 years old. So my sister is
| A．one | B．two | C．three | D．four |
—What kind of books do you like?
—I like funny storybooks. They're very_.
| A．boring | B．lazy | C．quiet | D．interesting |
—do you go to work every day?
—By bike.
| A．What | B．Who | C．How | D．When |
—Thanks ______ joining the Talk Show!
—You're welcome.
| A．by | B．on | C．of | D．for |
—Did you have a good time at the party?
—Yes. We sang ______danced until late at night.
| A．but | B．if | C．and | D．so |