问题

___some people are motivated by a need for success, others are motivated by a fear of failure.

A:Because
B:If
C:Unless
D:While;

正确答案是：

同类题型

is like riding a bicycle ________ your balance, you must keep moving

Is this pen–Yes, it is. It’s orange pen.

(2013荆州)Since 2000，Jingmen has become a new city．Everything________．

Which of the following is NOT good manners in the UK

Stop _______me and do what you have been told.[ ]