Accustomed to ______ the steep mountains， he had no difficulty reaching the top.
| A．climbing | B．climb |
| C．having climbed | D．have climbed |
At the 2003 Special Olympics in Ireland, more than 6,500 athletes from over 150 countries
_________.
| A．participated | B．joined | C．benefited | D．relied |
Good technique in medicine means less pain and fewer deaths; __________, it is our duty to master it.
| A．thus | B．therefore | C．otherwise | D．however |
The law of Venice says if anyone tries to kill or murder any citizen of Venice, everything that he owns ________ be taken away from him.
| A．shall | B．can | C．must | D．may |
You’d better carry a(n) ________ tyre in the back of your car in case it breaks down on the way.
| A．extra | B．free | C．convenient | D．spare |
Is this a book on farming? If so, I want to borrow __________.
| A．this | B．one | C．it | D．the one |