人类社会赖以存在和发展的基础是()
A.生产工具
B.物质资料的生产
C.消费
D.劳动力的提高
参考答案:B
____ to work on time, she has to start very early every morning to avoid the traffic jam. [ ]
A. To get
B. Getting
C. To have got
D. Get