单项选择题
A. who B. whom C. which D. that
He is regarded by all as a genius,()the important disco...
单项选择题He is regarded by all as a genius,()the important discovery was made.
A. who B. whom C. about whom D. by whom
Opposite the square is a very tall building,()top is we...
单项选择题Opposite the square is a very tall building,()top is well above the tops of the others.（）
A. its B. whose C. which D. that
The two elements()water is made are oxygen and hydrogen...
单项选择题The two elements()water is made are oxygen and hydrogen.
A. that B. which C. of which D. with which
