We do not own the building.________ it would be impossible for us to make any changes to it.
| A．Thus | B．Still | C．Yet | D．However |
Lifting off at sunrise, the hot air balloon goes wherever the windblow.
| A．may | B．must | C．need | D．should |
—Where on earth have they gone?
—I have no idea, but I wish I .
| A．know | B．knew | C．would know | D．would have known |
When Thanksgiving Day isthe corner, stores and supermarkets are busy with people.
| A．around | B．on | C．with | D．at |
The part in the filmthe man broke down the door made some of the audience give a cry.
| A．which | B．who | C．where | D．whom |
More than a quarter of the energyin the United States goes to moving people and goods from one place to another.
| A．using | B．used | C．to use | D．use |