23. The harder we work at our lessons, _____.
| A．the better our grades will be | B． our grades will be better |
| C．will our grades be better | D．even better our grades will be |
Stefan ________ from heart attack for more than ten years, but now he’s healthy and energetic.
| A．had suffered | B．suffered |
| C．has suffered | D．has been suffering |
--- Silly me! I forgot what my suitcase looks like.
--- What do you think of ________ over there?
| A．the one | B．it | C．one | D．this |
You can not expect to make great achievements if you set the goal ________ your ability.
| A．above | B．for | C．on | D．to |
—Hi. Tommy. Are you busy now?
—_____. I have done my work, and I’m going out for shopping.
| A．Don’t mention it | B．Nothing serious |
| C．Not really | D．Never mind |
Before ________ on our camping trip，we made sure that we had plenty of food and water in store.
| A．running out | B．making out | C．working out | D．setting out |