In this section, we will briefly describe possible ways of reducing the costs and risks __________ in doing this.
| A．involving |
| B．involved |
| C．to involve |
| D．being involved |
The most satisfying life is a lifeyou know the things you’re interested in and pursue （追求）it for your own.
| A．which | B．where | C．that | D．what |
Only latelyabout the dark secrets behind the seemingly-happy marriage of the golf star Tiger Woods.
| A．the public have known | B．were the public known |
| C．have the public known | D．the public knew |
________this problem, they don’t know how to deal with it.
| A．Face | B． Faced | C．Facing | D．To be faced |
You will see what great benefit the computers you own can be _____ every time we use them.
| A． at | B．of | C．for | D．on |
Is it the fact ____ he hasn’t turned in his research report?
| A．whether | B．that | C．which | D．why |