单项选择题

A．Seven times.
B．Five times.
C．At least seven times.
D．At least five times.
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单项选择题
A．Their father is unable to keep his promise.B．Their father is going on a vacation without her.C．Their father isn’’t telling her the truth.D．Their father doesn’’t want to travel abroad.
A．Their father is unable to keep his promise.
B．Their father is going on a vacation without her.
C．Their father isn’’t telling her the truth.
D．Their father doesn’’t want to travel abroad.
单项选择题
A．Food will go bad.B．Food will be checked.C．The bacteria will be found on food.D．Food will not go bad so soon.
A．Food will go bad.
B．Food will be checked.
C．The bacteria will be found on food.
D．Food will not go bad so soon.
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