单项选择题

He often attends public lectures at the university of California chiefly （） his English.

A．to improve
B．as to improve
C．to import
D．expect for

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单项选择题
Many students suggested （） a boat trip on the Huangpu River.

A．to organize
B．organize
C．organized
D．organizing
单项选择题
Certainly I'll come, but I am afraid I shall be （）.

A．a few minutes later
B．late a few minutes
C．a few minutes late
D．later a few minutes
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