一、单句语法填空
1.He (lie) on one of the sunny beaches in Hawaii all day when he spends his holiday there.
答案will be lying
2.Don’t call him between 2:00 and 4:00 this afternoon.He (have) a test then.
答案will be having
3.Nobody knew what (happen) to the Earth in a century’s time.
答案would happen
