The parents felt helpless when they found their son ______ drugs.
| A．addicted | B．addicted to |
| C．addicted himself | D．addicted himself to |
Thousands of athletes _______ in many countries competed ______ medals in the 2008 Olympic Games in Beijing.
| A．involved, in | B．involving, by | C．involving, against | D．involved, for |
The Science Museum, _______ we visited during a recent trip to Britain, is one of London’s tourist attractions.
| A．which | B．what | C．that | D．where |
The problem is _________ we can finish the work in time.
| A．what | B．whether | C．that | D．if |
A monument was set up at the centre of Tian’men Square ______ those who devoted their lives to our country.
| A．in praise of | B．in place of | C．in memory of | D．in need of |
－What do you think of Peter?
－He is a helpful person. He is always helping people without expecting anything_______.
| A．in turn | B．in return | C．on his turn | D．on the turn |