Though she is eighty years old,she is in good health .( )
unhealthy
ill
healthy
strong
________ great scientist Qian Xuesen is!
()I think _______ necessary for you _______ breakfast.
The workers were made _____ the whole day.
He often plans_________ a very relaxing vacation. A. having B. have C. to have
His father advised me _____ it again.