The headmaster suggested that a good preparation ahead of time.A. must be madeB. should b

问题补充：

The headmaster suggested that a good preparation ahead of time.

A. must be made

B. should be made

C. will be made

D. can be made

答案：

A. must be made

(答案→)B. should be made

C. will be made

D. can be made

解析：suggest表“建议”时，在其宾语从句中，谓语动词用“should+动词原形”。