-- The classroom looks like a mess!
-- Yes, but who left the waste paper ______ around?
| A．lie | B．to lie | C．lay | D．lying |
The golden rule is not to waste time waiting for opportunity. Begin, ______ opportunity will find you.
| A．and | B．when | C．so | D．because |
---Mom, where is my lunch pack?
---Just where it _______.
| A．has been | B．had been | C．was | D．be |
Some experts argue that the reason why the price of houses can’t drop is that the supply is not ______ to the demand.
| A．adequate | B．sensitive | C．entire | D．accessible |
Pay as much attention to the things that are working positively in your life as you do to ______ giving you trouble.
| A．these | B．ones | C．what | D．those |
Smile when ______ the phone. The caller will hear it in your voice.
| A．taking up | B．putting up | C．picking up | D．bringing up |