单项选择题

His health is ______ .

A．as poor as, if not poorer than, his sister's
B．as poor, if not poorer than, his sister
C．poor as his sister's if not poorer
D．as poor, if not poorer than, his sister's

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热门试题

单项选择题

The reason he has been such a success ______ he never gives up.

A．is what
B．is that
C．is because
D．is

单项选择题

Why is the university doing so much building The number of students ______ that there aren't enough classrooms.

A．have increased so rapidly
B．has increased so rapid
C．have increased so rapid
D．has increased so rapidly