单项选择题

A．How to care for precious metals.
B．A standard unit for measuring weight.
C．The value of precious metals.
D．Using the metric system.
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单项选择题
A．He was ill for more than a month.B．He was ill but had a happy holiday.C．His holiday was ruined because of his illness.D．He was in bed for a week.
A．He was ill for more than a month.
B．He was ill but had a happy holiday.
C．His holiday was ruined because of his illness.
D．He was in bed for a week.
单项选择题
A．She’’s going away for a while.B．She did well on the test.C．She worked hard and earned a lot of money.D．She didn’’t have to. work hard for the exam.
A．She’’s going away for a while.
B．She did well on the test.
C．She worked hard and earned a lot of money.
D．She didn’’t have to. work hard for the exam.
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