22. Practice makes ________.
| A．interesting | B．smooth | C．successful | D．Perfect |
The child was told to ______ for being rude to his uncle.
| A．excuse | B．apologize | C．pardon | D．forgive |
Last year the number of death increased by 2%-5% ______ the year before last.
| A．comparing to | B．comparing with | C．to compare with | D．compared with |
Some of the wolves there _________ their fur.
| A．are hunting | B．are hunting for | C．are hunted for | D．hunt for |
I’m used to ________ in the house which _______ to keep books and magazines.
| A．living; uses | B．live; was used | C．live; used | D．living; was used |
Stop! You can never touch this machine when it ________, it is very dangerous.
| A．has been operated | B．will be operated | C．is operated | D．is being operated |