I'm sorry to tell you that I________ on the play ground.
| A．forget your books | B．forgot your books behind |
| C．have left your books alone | D．left your books behind |
---Have you been to the National Theatre?
---No, but I’ve bought two tickets for the concert to be given this weekend.
| A．yet | B．even | C．ever | D．already |
My ______ of tomorrow’s activity is going out for a picnic with my classmates. 
| A．opinion | B．thought | C．mind | D．idea |
Eventually, the President had to leave office_____ public pressure in order to ease the tension of the situation.
| A．in favor of | B．in response to | C．in return for | D．in honor of |
Tom, turn down the music. Whyyou make such a big noise while your baby sister is sleeping?
| A．must | B．would | C．should | D．may |
We first met on a train in 2000．We both felt immediately that we _____ each other for years.
| A．knew | B．have known | C．had known | D．know |