1. Is this universty ( ) you visited last summer? A. the one B. that C. where D, which,
2. Is this the university ( ) you visited last summer?A.the B.that C,where D.which.
3. Tom is the only one of the students who ( ) from England.Ais B are C has been D have been.
4. Tom is one of the students who ( ) from England. A is B are C has been D have been
1. A, 陈述句为This university is () you xxx 所以缺名词/代词作表语，后面的为从句，而连词可以省略。
2. B或D. 如果改成Is this the university () xxx, 那么相当于This is the university () xxxx，那就得跟联系that/which。而where是作状语，相当于in which. B和D应该都可以。不过估计答案是B。那也是有问题的答案。
3. A. 强调the only one，后面从句形容the only one（Tom）, 所以为单数。不需要用完成时。
4. B，从句形容 students
3，4这种完全是刁难行的。作考试试题可以，在实际使用时，最好避免这种歧义。
Of the students, Tom is the only one who is from England.
Tom is one of the students who are from England.