the help of the teacher, the student who wasn’t good at math the difficult problem quickly.
A. Under; worked out
B. With; worked on
C. Under; solved
D. With; solved
网友回答
A. Under; worked out
B. With; worked on
C. Under; solved
(答案→)D. With; solved
解析：固定搭配with the help of在…的帮助下；work out计算出；制定出；work on从事于；solve解决；句义：在老师的帮助之下，那位擅长于数学的学生很快就解决了那道数学题。根据句义说明D正确。