If you don't buy insurance for your car，you may ______losing everything when it gets destroyed in an accident.
| A．delay | B．deny | C．avoid | D．risk |
It was with great delight that I read in your February _____ the letter to the Editor written by Prof. Johnson.
| A．issue | B．printing | C．magazine | D．copy |
Tell your brother to come _____, because it's going to rain in a minute or two.
| A．indoors | B．outdoors | C．outward | D．inwards |
A successful scientist needs _____ if he wants to make hypothesis (假设) of how processes work and how events take place.
| A．permission | B．penetration |
| C．imagination | D．convention |
This year the farmers were just able to gather in the _____ before the fine weather came to an end.
| A．collection | B．harvest | C．flower | D．plant |
He hated the war so much that he decided to leave the army _____.
| A．for long | B．once in a while |
| C．for good | D．once upon a time |