In our opinion, teaching a foreign language is science.
| A．as much an art as | B．as many an art as |
| C．as many arts as | D．so much an art as |
Your mother, however, ____ say that to us that day.
| A．does | B．did | C．is doing | D．was doing |
_____ with a good education can apply for the job.
| A．Who | B．Whoever | C．Anyone | D．Who ever |
He just does what he pleases and never _____ about anyone else.
| A．think | B．thinks | C．thinking | D．thought |
They kept trying _____ they must have known it was hopeless.
| A．if | B．because | C．when | D．where |
An awful accident, however, _____occur the other day.
| A．does | B．did | C．has to | D．had to |