_________ in the mountains for a week, the two students were finally saved by the local police.
| A．Having lost | B．Being lost | C．Lost | D．Losing |
______ label to each of the trees, with detailed introduction of their features, and visitors will know more about them and how to protect them.
| A．To attach | B．Attach | C．Attached | D．Having attached |
Some young people these days just ______ go out of their homes to contact the real world．
| A．mustn’t | B．won’t | C．mightn’t | D．shouldn’t |
What is concerning us greatly is ________ the workers held up in that area yesterday will be set free.
| A．that | B．what | C．when | D．which |
----Thank you very much for giving me a hand when I was in trouble.
------Don’t mention it. I only did what anyone else _______ in my place.
| A．must do | B．might do | C．would have done | D．can have done |
Come on, Maria! You can also enjoy_____ you have been dreaming of, if you don’t lose heart.
| A．as a convenient life as | B．as convenient a life as |
| C．as a life convenient as | D．convenient as a life as |