---The floor is dirty. Can anyone clean it?
---______I do it all the time.
| A．Don’t mention it. | B．Why you? | C．Not sure. | D．Not me again. |
—Shall we go for a picnic this Saturday or Sunday?
—It makes no difference to me.________.
| A．It couldn't be better |
| B．If you like |
| C．That's all right |
| D．It's up to you |
I quite enjoy painting pictures, I know that I do not have what it takes to reach the top.
| A．since | B．unless | C．if | D．though |
– How are you getting on with your father, Lucy?
– Couldn’t be . However hard I try, he just isn’t satisfied.
| A．better | B．worse | C．the best | D．the worst |
from the moon, our earth with water seventy percent of its surface, appears a blue ball.
| A．Seen; covered | B．Seen; covering |
| C．To see; covering | D．Seeing; covered |
We can help poor in so many ways and even the smallest effort can make difference.
| A．the; a | B．不填; the |
| C．不填; a | D．the; the |