23. ––Was ______ problem solved?
––We were trying to think of ______ way out, but it was difficult to find one.
| A．a; a | B．a; the | C．the; a | D．the; the |
explanation
| A．example | B．exit | C．explain | D．exam |
climb
| A．hour | B．laboratory | C．bomb | D．bitter |
forget
| A．general | B．large | C．change | D．forgive |
—Thank you for your help, Mr. Smith. I’ll hand in my paper tomorrow.
—______. You may send it to my mailbox 3 days later.
| A．No hurry | B．With pleasure |
| C．Come on | D．Nothing serious |
—Could I smoke here?
—I’d prefer _______if you don’t smoke in front of the children.
| A．that | B．this | C．it | D．you |