I would have come earlier, but I ________ that you were waiting for me. 

To _____ his position in the country, he appointed his close friend Henry as head of the troops. 

— Will James attend the party? — He has just arrived, but I didn’t know he ______ until yesterday. 

“Does anybody know the definition of Nerd?”        the host seated in the front.

 You have to keep alert when you are in the supermarket; otherwise, you might _____ what you actually don’t need at all.