皮皮学，免费搜题
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搜题
【单选题】
When would the student have to complete the extra assignments?A.
While at the foreign university.
B.
Before being accepted by the program.
C.
After returning from the trip.
D.
Before seeing the advisor again.
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知识点：
皮皮学刷刷变学霸
举一反三
【单选题】We sincerely apologize for the delay due to___________
A.
unfavorable weather conditions
B.
aircraft late arrival
C.
air traffic control
D.
traffic accident