Sheldon could have defeated Howard in the match, but he _______ too careless at the last minute.
Most people who enjoy travelling believe that travel ______ not only our bodies but also our minds.
Students show great interest in ______ Professor Edwards presents to them in his class.
—Are you going to the concert next week? —I’d like to, but I ______ an exam then.
—I didn’t know you play the piano. It sounds wonderful! —Thank you! I ______ it when I worked in UK.
We are going to the theater tomorrow ______ all the tickets are sold out.