Tom concluded his lecture ________ that he couldn’t emphasize enough how important our efforts were.
| A．to say | B．saying | C．said | D．having said |
The speed ______ Tom drives his car is too high.
| A．in which | B．at which | C．at that | D．in what |
With trees and grass_____ about 35％ of the urban area，the city of Hefei has taken on a new look.
| A．covered | B．being covered | C．to be covered | D．covering |
Process so far has been very good．______，we are sure that the project will be completed on time．
| A．However | B．Otherwise | C．Therefore | D．Besides |
— When do we need to pay the balance?
— ____ September 30.
| A．In | B．By | C．During | D．Within |
______ and out of breath, we reached the top of the mountain and stopped _____ the beautiful scenery.
| A．Tiring, to admire | B．Being tired, admiring |
| C．Tired, to admire | D．Tired, admiring |