单项选择题

A．He sold traffic-counting system to local governments.
B．He dropped out of his law course at Harvard University.
C．He founded his own company--Microsoft Software company.
D．He devised an operating system for IBM.
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单项选择题
A．He was playing computer games with a few of his friends.B．He was playing basketball with a few of his friends.C．He was having a barbecue with a couple of friends.D．He was watching a game on TV with some friends.
A．He was playing computer games with a few of his friends.
B．He was playing basketball with a few of his friends.
C．He was having a barbecue with a couple of friends.
D．He was watching a game on TV with some friends.
单项选择题
A．The area of the house is about 400 sq. ft.B．The house is in San Francisco.C．The price of the house is about US $500,000.D．The house is under the name of the man.
A．The area of the house is about 400 sq. ft.
B．The house is in San Francisco.
C．The price of the house is about US $500,000.
D．The house is under the name of the man.
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