A、See a doctor. B、Have a good rest. C、Do exercise. D、Relax himself. B女士说自己最近很忙很累，男士建议女士应该好好休息。由此可知，男士的建议是B项“好好休息”。

M：How was your trip to the mountain?
W：It was terrible. It rained heavily.
Q：What does the woman think of her trip?

W：I have been so busy these days and I feel so tired.
M：You’d better have a good rest.
Q：What does the man suggest the woman do?