—Dear me! It’s you, Bob! I ______ to recognize you at first sight!—Nor did I! Time has changed us a lot!
Nobody knows the man killed in the accident, so it is difficult for the police to find out his _______ .
Never has the reporter _______ such pains since his childhood.
We shouldn’t have set out at that time. We had _______ the fact that it was getting darker.
The handsome man is my uncle ________ overcoat is black and white.
The rescue worker looks very young but _______ she is more than thirty years old.