Bob likes bread, ______he doesn’t always eat it.
| A．but | B．and | C．so | D．then |
＿＿＿＿＿ years ago, people first began to drink tea in China.
| A．Thousand | B．Thousands | C．Thousand of | D．Thousands of |
＿＿＿＿＿ is our duty ＿＿＿＿＿ the environment.
| A．This; protect | B．It; to protect |
| C．This; protecting | D．It; protect |
＿＿＿＿＿ of our school is covered with trees and grass.
| A．Third-one | B．One-threeth |
| C．One-third | D．One-thirds |
His watch is 5 minutes ＿＿＿＿＿. He feels ＿＿＿＿＿ now.
| A．slow; worry | B．slow; worried |
| C．slowly; worry | D．slowly; worried |
He’s made great progress, ＿＿＿＿＿?
| A．doesn’t he | B．isn’t he |
| C．has he | D．hasn’t he |