There are lots of problems in your hometown, but we're happy to see many of them .
A. are solving
B. are solved
C. have solved
D. are being solved
网友回答
A. are solving
B. are solved
C. have solved
(答案→)D. are being solved
解析：考查时态语态，因为问题和解决之间是被动关系，所以排除A,C..因为前面说在你的家乡有很多问题，说明问题还没有完全解决，只能是正在被解决。