It seems that El Nino some disasters in the world in the past few months ( )
A.has causedB.is causingC.will causeD.caused
________ 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.