The doctor ---she sent her friend is very famous.

The doctor ___she sent her friend is very famous.
选项:
a、to whom
b、to whose
c、whom
d、at whom
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题号:22 题型:单选题（请在以下几个选项中选择唯一正确答案） 本题分数:3.33
内容:
Abraham Lincoln (亚伯拉罕.林肯) was the____of the United States.
选项:
a、the sixteenth president
b、the sixteen president
c、president sixteen
d、president the sixteenth