He knew nothing about the matter, but he talked as if he __it.
| A．knows | B．knew | C．had known | D．would know |
An expert, together with some scientists ______to help in the work.
| A．was sent | B．were sent | C．has sent | D．have sent |
．My brother is really_____. He often works in his office far into the night .
| A．open-minded | B．hard-working | C．self-confident | D．warm-hearted |
We spent many hours in a pleasant conversation______ how to fish.
| A．talking about | B．to talk about | C．talked about | D．to be talked about |
．The latest data______by the states suggested that the business was improving .
| A．putting forward | B．to put forward | C．put forward | D．put up |
. Don’t worry . I’ve______ a car to pick up the guests at the stations at 6 o’clock.
| A．arranged | B．arranged for | C．prepared | D．prepared for |