There ________ lots of trees on both sides of this street.But now they are all gone.
| A．used to have | B．are used to be | C．used to be | D．are used to have |
---Do you mind if I open the door ?
--- ____________.
| A．No, of course not | B．Never mind |
| C．Yes, please | D．No, you can’t open it. |
This kind of CD-ROM is very popular. Why not buy one before it________ ?
| A．comes out | B．is come out |
| C．sells out | D．is sold out |
The old man is _____ in a lonely house, but he doesn’t feel_____.
| A．alone, lonely | B．lonely, alone |
| C．alone, alone | D．lonely, lonely |
--- Why not go to see the dolphin show with me?
---Because I _____ it.
| A．saw | B．will see | C．see | D．have seen |
Jim______ to the shop. He’ll be back_____ an hour.
| A．has gone; after | B．has been; in | C．has gone; in | D．has been; after |