______ that he has no qualifications in business management, Ken plans to gain the necessary skills by taking a part-time course.
| A．Concerning | B．Concerned | C．Being concerned | D．To concern |
. Some evidence threw doubt on ______ he had lent the money to the defender.
| A．if | B．which | C．that | D．Whether |
She took her son, ran out of the house, and ______ him in the car, drove quickly to the nearest doctor’s office.
| A．put | B．to put | C．putting | D．having put |
. He hesitated about the brake, otherwise the accident ______.
| A．could have been avoided | B．could have avoided |
| C．would have avoid | D．should have been avoided |
The population of China ______ to many times what it was in 1949, and most of its population ______ farmers.
| A．have grown; are | B．has grown; are | C．has grown; is | D．have grown; is |
Please tell me ______ you would like to have your coffee --- black or white?
| A．how | B．what | C．when | D．which |