The colleges and universities were only for men, and women were not________(允许)to attend.
Shelly had prepared carefully for her________(生物)examination so that she could be sure of passing it on her first attempt.
After examining, the plastic surgeon________(诊断)my illness as a rare bone disease.
The students of class two are carrying out an________(实验)in physics.
It's ten years since the scientist set out on his life's work of________(发现)the valuable chemical.