情态动词表建议与义务 — 英语选择题

To build better study habits, Leo is advised to make a weekly plan, but he is not required to do so. The focus room rules forbid phone use. Leo ___ make a weekly plan, and he ___ use his phone in the focus room. A. should; mustn’t B. must; doesn’t have to C. doesn’t have to; should D. mustn’t; must