You have already tried your best, so you _____worry too much about the exams.

— Where’s Lucy ? —  She ________ in the office. I saw her there just now.

 We all know that we ________ our carbon footprint, but I suspect that many people wouldn't be prepared to go as far as Joan Pick, a retired scientist living in south London.

Every time they met, they ____ talk about former classmates they remembered.

 As to the question of whether we will sell our house or who we shall sell the house to, you ____ have answer by tomorrow.