【原创】According to the doctor, the patient had______ at once.
| A．to operate | B．to be operated |
| C．operated | D．to be operated on |
A salty diet may increase the risk of stomach cancer ________ 10 percent, South Korean researchers found in a study of more than 2 million people．
| A．at | B．to | C．by | D．for |
The first textbooks ______ for teaching English as a foreign language came out in the 16th century.
| A．to be written | B．written | C．being written | D．having written |
Some people are worrying about the possibility ________ mobile phones could be responsible for a range of illnesses, from rashes(皮疹) to brain tumors．
| A．that | B．why | C．how | D．whether |
— Would you mind my coming over and having a look at your new garden? My little son’s curious about those roses you grow．
—________．You are welcome．
| A．Yes, I do | B．Never mind | C．Yes, please | D．Not at all |
It is the _________ in Britain that young people often do not shake hands when they meet someone for the first time.
| A．custom | B．habit | C．hobby | D．favour |