问题
选择题
With a lot of problems _____, the president is very busy every day and hasn't had a good rest. [ ]
A. solving
B. to solve
C. solved
D. having solved
答案
答案：B
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With a lot of problems _____, the president is very busy every day and hasn't had a good rest. [ ]
A. solving
B. to solve
C. solved
D. having solved
答案：B