With all the books he was interested in _______, he left the library and went back to his dorm.
I delayed _______ your letter because I had been away for a week.
---Will the Smiths go abroad this summer? ---No, they finally decided _______ .
The patient was warned _______ oily food after the operation.
Charles Babbage is generally considered _______ the first computer.
The matter had better _______ as it is.