1. It is believed that travelling to Yangzhou in ______ March is ______ enjoyable experience.
A. /; the B. the; an C. /; an D. the; the
2. — Would you please _______ the meeting at 3 pm in the Room 301, Mr White?
— No problem.
A. attend B. join in C. join D. take part in
3. David still remembers the days ______ he spent in Peking University with his students.
A. which B. when C. what D. who
