This math problem is too difficult. Can you show me________, George?
| A．what to work out | B．to work i t out |
| C．how to work it out | D．how to work out it |
—You have tried on several more shirts.
— Sorry to take up too much of your time. But _______of them look good on me.
| A．neither | B．any |
| C．none | D．both |
—I hear you’ll take part in the English contest.
—You’re right. I think it’s a great ________ for me.
| A．solution | B．challenge |
| C．trouble | D．duty |
－Jim, is physics difficult to learn in high school?
－Sure. No subject can be learned well hard work.
| A．without | B．from |
| C．through | D．for |
The U.S. first lady Michelle Obama, arrived in China on March 20, 2014 for _______ six-day visit, focusing on _______ importance of cultural exchanges.
| A．the, an | B．a, an |
| C．a, the | D．the, the |
The room was ______dark ________we didn’t see anything.
| A．so,that | B．too,that |
| C．so,as | D．such that |