Sorry, I’m busy _____ the moment. You can ask Jenny for help. [ ]
Researchers have found clear and convincing evidence ________ happiness isthe key to better health and longer lives.
Are you going anywhere?—I ______about visiting my sister, but I have changed my mind.
Who’s that?—My sister. ______ works in a factory.
______put great pressure on the local government to tell the truthfulness of the tiger photo as soon as possible.