Not until I began to work ____ how much time I had wasted.
The three of us ________ around Europe for about a month last summer.
I woke up with ________ bad headache, yet by ________ evening the pain had gone.
— I'm going to San Francisco for a couple of days.— . I wish I could get away for a while.
--- You must find one exam after another very tiring.--- __________. In fact, they offered me good chances to apply what I had learned
Without my glasses, I couldn’t _______ whether that figure on the blackboard was a three or an eight.