—_______ to keep our classroom clean and tidy.
—You are right.
| A．That’s our duty | B．This is our duty |
| C．It’s our duty | D．The duty is |
He was too excited to get to sleep．He was still________at about 2:00 am．
| A．asleep |
| B．awake |
| C．sleep |
| D．wake |
Look at the cute baby over there．He is about 3.6 kilos________birth．
| A．for |
| B．in |
| C．at |
| D．on |
—Can your sister play tennis？
—Sure．She plays________I do．
| A．as good as |
| B．so good as |
| C．so well as |
| D．as well as |
Jimmy is________than his brother．
| A．very outgoing |
| B．much outgoing |
| C．more outgoing |
| D．outgoinger |
The watch is as________as that one．
| A．cheap |
| B．cheaper |
| C．more cheap |
| D．cheapest |