34. It was a pity that the great writer died________ his works unfinished.

　 　A. for　 　　　　　　B. with　 　　　　　　C. from　 　　　　 D. of

35 In order not to be disturbed, I spent three hours _______ in my study.

　 A. locking 　　　　　B. locked 　　　　　C. to lock　 　　　D. to be locked