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Come on! Just give it a try.( )
I'm afraid I can't ride the bike.
I'm sorry for breaking the window.
I'm glad to win first place.
I'm sure it's bad for your eyes..
________ 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.