It is required that passengers remain ________ when the plane is taking off or landing.
| A．sit | B．seating | C．sat | D．seated |
________ we stood at the top of the building, we were able to see the town below clearly.
| A．As |
| B．Although |
| C．Unless |
| D．Until |
After he ________ the table, he sat down on the sofa for a rest, waiting for his guests.
| A．lay |
| B．laid |
| C．put |
| D．made |
The socks are so _______ that they can’t be mended any more.
| A．used up |
| B．worn out |
| C．tired out |
| D．broken out |
If you meet _______ problems, please turn _______ me.
| A．with; to |
| B．down; up |
| C．with; up |
| D．across; to |
Tom as well as two of his friends ________ to the concert last night.
| A．has been invited |
| B．had been invited |
| C．were invited |
| D．was invited |