．People like taking photos because photos are the _______ of youth and history and can remind us of many happy scenes.
| A．witness | B．guidance | C．evidence | D．approval |
Put the ___ of your tongue against your upper teeth when you produce the sound.
| A．tip | B．top | C．peak | D．pole |
You have been sitting on my hat and now it is badly out of _____.
| A．date | B．shape | C．order | D．balance |
At the meeting they discussed three different ______to the study of mathematics.
| A．approaches | B．means | C．methods | D．ways |
The ______on his face told me that he was angry.
| A．impression | B．sight | C．appearance | D．expression |
To make members of a team perform better, the trainer first of all has to know their _____ and weaknesses.
| A．strengths | B．benefits | C．techniques | D．values |