The new rule has been working effectively since it __________.
| A．comes into existence | B．was come into existence |
| C．came into existence | D．was coming into existence |
Ten years had passed. I found she had _______.
| A．a few white hairs | B．a little white hair | C．some white hair | D．more fifty hair |
A man with a bleeding hand hurried in and asked, “Is there a hospital around ______ I can get some medicine for my wounded hand?”
| A．that | B．which | C．where | D．what |
_______ is known to everybody that the moon travels round the earth once every month.
| A．It | B．As | C．That | D．What |
_____ is known to everybody, the moon travels round the earth once every month.
| A．It | B．As | C．That | D．What |
The factory was built in a secret place, around ______ high mountains.
| A．which was | B．it was | C．which were | D．them were |