To the doctor, the most important thing is to save lives.

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　　A. 主语   B. 谓语   C. 表语   D. 宾语

We are all working hard to make our country more beautiful.

[    ]

　　A. 宾语   B. 定语   C. 宾补   D. 状语

The teacher promised to tell us an English story.

[    ]

　　A. 状语   B. 宾语   C. 定语   D. 表语

I saw an apple fall from the tree.

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　　A. 宾补   B. 状语   C. 表语   D. 定语

The computer tells the robot what to do.

[    ]

　　A. 主语   B. 表语   C. 宾语   D. 定语