Happiness and success often come to those________are good at recognizing their own strengths. (2013·湖南，21)
| A．whom | B．who |
| C．what | D．which |
.
It is going to rain today. Take an umbrella with you to___________you from the rain.
| A．stop | B．prevent | C．keep | D．protect |
.
My friend, Lucy can get 200 dollars more than she made___________in the primary school.
| A．work | B．to work | C．working | D．worked |
.
___________is hard is to do good all one's life and never do anything bad.
| A．He | B．It | C．That | D．What |
.
—What are you busy with?
—The conference___________in our city next week, as you know.
| A．held | B．will be held | C．be holding | D．to be held |
.
Just because they make more money than I do, ___________they seem to look down on me.
| A．so | B．and | C．but | D．不填 |