little of each other’s language，so they have to express themselves with the aid of all interpreter．
| A．Knowing | B．Having known | C．That they know | D．They know |
His mother could do nothing but _______ for the doctor to arrive.
| A．to wait | B．waiting | C．waited | D．wait |
All cases ______ children are dealt with in a special children’s court.
| A．concerned | B．concerning | C．concern | D．to concern |
Some students, hoping to get a high score, are _______ about the results of coming exam.
| A．absurd | B．guilty | C．anxious | D．puzzling |
As we all know, _______ mankind has realized the walk in ______ space.
| A．the; the | B．/; the | C．/; / | D．the; / |
-----I’m afraid I can’t finish the novel you lent me this week.
----___________.
| A．Please go ahead | B．That’s all right | C．Take your time | D．Not at all |