However, at times this balance in nature is ______, resulting in a number of unforeseen effects.
| A．troubled | B．disturbed | C．confused | D．Puzzled |
The two shirts are ____ the same size ,but different ____ color.
| A．of; of | B．in ;in | C．of; in | D．in; of |
A poet and artist ____ coming to our school to give us students a lecture 
about Chinese literature tomorrow afternoon .
| A．was | B．are | C．is | D．were |
You must ___ food and clothes to those who have suffered from the heavy floods.
| A．supply | B．offer | C．give | D．provide |
Thank you for giving us a wonderful Chinese dinner, Ms. Wang.
__________________.
| A．Oh. I’m afraid I didn’t cook very well. |
| B．I’m glad you enjoy it. |
| C．Come again when you are free. |
| D．It’s not polite of you to say so. |
___ I came to the city , I was deeply impressed with its beautiful scenery .
| A．For the first time | B．At first | C．It was the first time | D．The first time |