People believe that mutual understanding _______ a happy marriage.
| A．takes to | B．makes for | C．brings down | D．depends on |
I remember her face but I cannot _____ where I met her.
| A．recall | B．remind | C．remember | D．remark |
It has always been the _____ of our firm to encourage workers to take part in social activities.
| A．plan | B．campaign | C．procedure | D．policy |
The most important _____ of his speech was that we should all work whole-heartedly for the people.
| A．element | B．spot | C．sense | D．point |
When I worked as the general manager of the firm, I sometimes had _____ to visit London on business.
| A．opportunity | B．possibility | C．occasion | D．chance |
These plastic flowers look so _____ that many people think they are real.
| A．beautiful | B．natural | C．artificial | D．similar |