Watch for changes in weather．,Watch their altitude．,Che-找考题网

单项选择题

A．Watch for changes in weather.
B．Watch their altitude.
C．Check for weak spots in their balloons.
D．Test the strength of the ropes.

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单项选择题A．A clerk.B．A student.C．A maths teacher.D．A telephone operator.

A．A clerk.
B．A student.
C．A maths teacher.
D．A telephone operator.

单项选择题A．Mark the latest homework assignment.B．Put a cancellation notice on the classroom door.C．Make an appointment with the doctor.D．Return some exams to his students.

A．Mark the latest homework assignment.
B．Put a cancellation notice on the classroom door.
C．Make an appointment with the doctor.
D．Return some exams to his students.

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