When you feel tired or weak ,green may be of to you.
| A．helpful | B．helpless | C．help | D．to help |
Her mother asked her to keep the windows ____ and the door ____.
A.open ; closed B.closed ; to open C.to open ; to close
—Remember this , children . _______careful you are,_______mistakes you will make .
—We know , Mr. Li .
| A．The more; the more | B．The fewer; the more |
| C．The more; the fewer | D．The less; the less |
—Could I use your computer, Susan?
—Sorry, I’m going to _______ it now. You can use it tomorrow.
| A．work out | B．work in | C．work on | D．work for |
You are not ____ to take part in the match. Please work hard and try to improve yourself.
A. good enough B. Enough good C. well enough
_______ you tell me how I_______ get to the No．168 Middle School?
| A．Do；can | B．Can；could | C．Could；can | D．Could；could |