He ________ sleep, although he tried to, when he got on such a hunt for an idea until he had caught it.
| A．wouldn't | B．shouldn't |
| C．couldn't | D．mustn't |
The house they are living now is ______ our house.
| A．twice the size as | B．the size twice of |
| C．twice as the size of | D．twice the size of |
Milu deer，which used to be ______ in China long ago，is a rare animal nowadays.
| A．ordinary | B．common | C．popular | D．usual |
By the time I arrived at the airport, she_____ for New Zealand.
A. would be leaving B has left C will have left D had left
She can’t ______ having nothing to do.
| A．lie | B．stand | C．seat | D．run |
________ miss the early train, we should start right now.
| A．So as to not | B．To not | C．In order to not | D．In order not to |