________ I had walked for six hours, I was tired out.
---Who called just now? ---I don’t know because I didn’t______ his voice.
-----Did you watch the movie After Shock last night ? ----- I had planed to , but it _______ hard all the time .
You can’t imagine what difficulty we had_______ home in the snowstorm.
Students should _______ everything important that their teachers give in class.
We are living in an age _______ many things are done on computers.