Ladies and gentlemen，please return to your seat and fasten your safety belt. Our plane_________.
| A．takes off | B．is taking off |
| C．has taken off | D．will be taking off |
If there is any change about the time of the meeting, please inform us ____．
| A．at present | B．in the meanwhile | C．at times | D．in advance |
．The story goes ____ William Tell did kill the tyrant with that arrow．
| A．when | B．where | C．that | D．why |
—Hi, Mr．Brown! May I pick a flower in the park?
—____．
| A．No, you don’t | B．No, you mustn’t | C．No, go ahead | D．Yes, you could． |
Difficult as the question was, David ____ to find an answer．
| A．failed | B．succeeded | C．forced | D．managed |
Dickens visited America in 1842, publishing American Notes on his return and ____ his experience in another book．
| A．to include | B．including | C．to be included | D．included |