Although the first part of the book is easy， the rest ______.
| A．are difficult | B．has proved difficult |
| C．is supposed difficult | D．have been found difficult |
—How was the journey? Did you come back by plane or by train?
—For some reason, I came back by train. I ____ back by plane, though.
| A．could have traveled | B．should travel |
| C．might travel | D．would have traveled |
It is important to learn to take a positive attitude_____ life when you are ___ trouble.
| A．to; under | B．of; in | C．to; in | D．with; in |
While our manager is away on business, Our company will be ______ Mr. Zhang.
| A．in the charge of | B．in charge of |
| C．taken charge of | D．taking the charge of |
The favorite room is the tidy study with a fireplace, ____ we can watch TV and enjoy the nice scenery outside.
| A．where | B．which | C．when | D．that |
There is no doubt ______ everyone will unite and work for better days.
| A．whether | B．that | C．what | D．how |