几道英语题，求高手帮忙做下。谢谢！

1. The physician_____ us a healthy diet and regular excises.

A. commanded B. suggested C. proposed D. advised

6. The teacher required that all the assignments _____finished before this weekend.

A. would be B. were C. be D. are to

8. The train _____ arrive at 5 pm was late for six hours.

A. due to B. have to C. suppose to D. owing to

1.B，A的语气太强硬了，B建议某个想法，计划，C提出某个事情去促进某事的发展，D是经过深思的

（我不是很确定，这四项我是根据英英字典的解释得出来的）

2C，主句谓语动词是require，表要求，像这种表建议或者要求的动词在主句做谓语时，从句的谓语要用

should+do，其中should可以省略

3D，was肯定是谓语了，而且前面没引导词，说明这句话是一个简单句，不是复合句，所以只能有一对主谓

A,B,C都是做谓语的，所以只能选D

B

C

C