We still cannot persuade him to give up smoking ____ hard we tried.
| A．so | B．how | C．though | D．however |
It took a long time for the connection between body temperature and illness________.
| A．to make | B．to be made | C．making | D．being made |
―The river runs clear.
―We all appreciate the importance the local government has______ the environmental protection.
| A．attached to | B．contributed to | C．responded to | D．subscribed to |
The boss refused to sell the car for ________ he thought was not satisfactory,
| A．that | B．which | C．how | D．what |
—What _______ you to get bored with her?
— _______was her laziness and unkindness.
| A．made; It | B．caused; That | C．led; It | D．got; That |
We hope the bridge ______ the road ______ will be completed as soon as possible. We can’t bear the inconvenience any more.
| A．to; being carried out | B．of; carried out |
| C．on; to be carried out | D．to; carrying out |