单项选择题

A．He made 3 speeches every 6 days.
B．He made 3 speeches in 6 days.
C．He made 6 speeches in 3 days.
D．He was going to start his fourth speech.
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单项选择题
A．I am.B．Sony, I can’t.C．Lucy is absent.D．Fine, thank you.
A．I am.
B．Sony, I can’t.
C．Lucy is absent.
D．Fine, thank you.
单项选择题
When we speak, sound waves begin to travel and go in all directions.
A) 当人们说话时，声音向四面八方传开。
B) 当我们说话时，声音就开始传播，并且向四面八方传开。
C) 当我们说话时，声波开始传递，而且向四面八方传播。
D) 当说话时，声波开始旅行，并且走向四面八方。
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