My best friend, Lin Tao, is more outgoing than me.

_____ the catastrophe happened that thelocal government realized the importance of substantial development

expected, only five peopleturned up at the party, __________ disappointed the hostess very much

the topsoil of the earth is the subsoil, _____layer that contains stones mixed with a small amount of _____ organic matter

Who’s calling, please—Oh, ______.