______ a week do you use your computer—Twice.

you decide to leave your job,_______ the effect it will have on your family.

Had they known what was coming next, they ________ second thoughts.[ ]

Oh, I had a terrible toothache!—You’d better go to see a doctor and have your tooth out.

I _____ tell you with certainty that he won’t be able to finish it before the deadline. [ ]