It can’t be a(n) __________that another big fire broke out in the same restaurant in three months.
| A．accident | B．incident | C．chance | D．coincidence |
Often he______ sit for hours doing nothing at all when he was in low spirits.
| A．should | B．would | C．could | D．might |
What he had said and done in the school ______ his parents and teachers.
| A．was pleased | B．pleased | C．pleased by | D．pleased with |
—What are you anxious about?
—_______.
| A．How can we succeed | B．Whether we can succeed |
| C．When can we succeed | D．That we can succeed |
The boss refused to sell the car for ________ he thought was not satisfactory.
| A．that | B．which | C．how | D．what |
―The river runs clear.
―We all appreciate the importance the local government has_______ the environmental protection.
| A．attached to | B．left for |
| C．responded to | D．learnt from |