When products made in factories _____, they are thrown away as garbage.
| A．come to an end | B．are put to use | C．are used up | D．wear out |
_____ the difference between the two research findings will be one of the worst mistakes you make.
| A．Ignore | B．Ignoring |
| C．Ignored | D．Having ignored |
Only after talking to two students ________ that having strong motivation is one of the biggest factors in reaching goals.
| A．I did discover | B．did I discover |
| C．I discovered | D．discovered |
Don't sigh over the small achievement. _____, and I'm sure if you keep at it, you'll see the light at the end of the tunnel!
| A．Lookers-on see most of the game |
| B．Constant dripping wears away the stone |
| C．The world is your oyster |
| D．Lost time is never found again |
—I like this dress better than that one.
— ____, but it costs almost twice____.
| A．So do I; as much | B．Neither do I; as many |
| C．So I am; so much | D．Neither am I; so many |
We shall not start the project until it ____ by the committee.
| A．will be approved | B．approves |
| C．has been approved | D．is to approve |