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Allow children the space to express their opinions ________ they are different from your own.
| A．until | B．even if | C．unless | D．before |
. This tower _______ back to 1860s and it is still in good condition.
| A．is dating | B．dated | C．was dated | D．dates |
You can see the stars on a clear night, but in the daytime they are __________.
| A．unbelievable | B．invisible | C．inaccessible | D．unavailable |
Finding her car stolen, __________.
| A．a policeman was asked to help | B．the area was searched thoroughly |
| C．it was looked for everywhere | D．she hurried to a policeman for help |
We would not __________ such hard work. It’s impossible for us to complete it in such a short time.
| A．take in | B．take off | C．take on | D．take down |
Eating too much fat can __________ heart disease and cause high blood pressure.
| A．result from | B．contribute to | C．attend to | D．devote to |