---Have you seen Jane this week?---No, but I ________ her call on my way to work this morning.
I passed by Joan quickly without greeting her, ______not to see her.
The inventor was determined to go on with the experiment_______countless failures.
To our great relief, the exam turned out to be not so difficult as we_______.
It’s one thing to have theories, but it’s _______to put them into practice.
Yesterday my aunt sent me an email _______she told me she would come to see me next week.