The factory was built in a secret place, around ______ high mountains.
| A．which was | B．it was | C．which were | D．them were |
His success ____ the fact ____ he had been working hard.
| A．put in; which | B．led to; because | C．lay in; that | D．got in; that |
The secretary has _____to the related guests all the invitations to our company’s celebration.
| A．taken out | B．sent out | C．brought out | D．picked out |
It is fashionable to drive a car, but to drive a car is not nearly as difficult as it is imagined on condition that you ______ the specialized rules.
| A．give up | B．stick to | C．insist on | D．connect to |
The doctor was ______ immediately the little boy fell off a ladder and hurt himself.
| A．asked for | B．sent for | C．waited for | D．cared for |
---shall we have our picnic tomorrow?
---it doesn't rain.
| A． | Until | B． | While | C． | Once | D． | If |