单项选择题

A．Bad weather.
B．The large size of airplanes.
C．Mistakes by air traffic controllers.
D．Crowded air traffic.
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单项选择题
A．Have her copies made outside the library.B．Use a different machine to make her copies.C．Read the article while she waits in line.D．Look for a different magazine article.
A．Have her copies made outside the library.
B．Use a different machine to make her copies.
C．Read the article while she waits in line.
D．Look for a different magazine article.
单项选择题
A．Her professor did not like her story.B．She had trouble finishing her assignment.C．She did not like the topic she had chosen for her paper.D．She was taking too many courses.
A．Her professor did not like her story.
B．She had trouble finishing her assignment.
C．She did not like the topic she had chosen for her paper.
D．She was taking too many courses.
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