_____ little water is not enough for _____ many people.
| A．Such, so | B．So, so | C．Such, such | D．So, such |
No smoking, please. It’s ____ the rules.
| A．against | B．for | C．on | D．at |
Although we are young, ______ we can still do something to help them.
| A．but | B．/ | C．and | D．however |
It is necessary _____ something to protect our environment.
| A．do | B．to do | C．does | D．doing |
If it ______ tomorrow, I’ll go hiking with my friends.
| A．won’t rain | B．will rain | C．doesn’t rain | D．rains |
I often see her _______ the piano. Listen, can you hear her _________ the piano now?
| A．play, playing | B．plays, playing |
| C．playing, plays | D．play, plays |