单项选择题

A．He has been ill.
B．He hasn’t yet found a topic.
C．He was busy studying for an exam.
D．He didn’t know when it was due.
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单项选择题
A．200, 000 tons.B．2 million tons.C．20 million tons.D．2,000 tons.
A．200, 000 tons.
B．2 million tons.
C．20 million tons.
D．2,000 tons.
单项选择题
A．It will last for two weeks.B．It has come to a halt.C．It will end before long.D．It will probably continue.
A．It will last for two weeks.
B．It has come to a halt.
C．It will end before long.
D．It will probably continue.
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