Question

根據(jù)句子意思和所給的首字母寫(xiě)出所缺單詞。

1. Oxygen (氧氣) is a kind of u_______ gas.
2. The Yellow River is the s________ longest river in China.
3. I think it u________ to see the ghosts (鬼). You must be joking.
4. There are many a_______ who want to fly to the moon.
5. I felt surprised and scared when I saw the t________ monsters.

Answer 1

1. useful   2. second   3. unbelievable   4. astronauts   5. terrible