Once harm ______ to the environment, it takes years to have the system recovered.
| A．does | B．is done | C．will be done | D．be done |
Itis ____ short distance from here to _____ shopping center, so you can walk there if you like.
| A．不填; 不填 | B．a; 不填 | C．the; the | D．a; the |
—Sorry, I made a mistake again．
—_____．Practice more and you’ll succeed．
| A．Never mind | B．Certainly not |
| C．Not at all | D．Don't mention it |
Fans from miles around crowded into the stadium for the concert of Jay Chou on September 4th, 2010, _________ are popular with teenagers.
| A．many of his songs | B．and many of whose songs |
| C．many of which songs | D．many of whose songs |
Don’t play with the dog, Jack, for it ______ be dangerous at times.
| A．shall | B．can | C．should | D．must |
I admired his paintings, and Ted said he would like me to have ________ as a gift from him.
| A．it | B．that | C．one | D．the one |