---How much difficulty did you have________________ this physics problem?
---_____________. It's quite easy.
| A．to solve, Nothing | B．solving; None |
| C．to solve, None | D．solving; Nothing |
The famous singer will give a performancethe concert hall .
| A．by | B．of | C．on | D．at |
Larry, please passthe dictionary.
| A．I | B．me | C．my | D．Mine |
It only ____ me half an hou to school every day last term.
| A．takes; riding | B．spent; to ride |
| C．cost ; walk | D．took; to walk |
— Have you heard of Weifang? — Yes, it __________ kites.
| A．is known for | B．is used for |
| C．is taken for | D．is named for |
—Excuse me. I’m looking for Be the Best of Yourself.
—Sorry. The book you ask for ______ out.
| A．is selling | B．was sold |
| C．was selling | D．will be sold |