My younger brother dreams ________________ a spaceman.
A．to become B．of be become C．of becoming D．becoming
Is he honest? I find ____ hard to believe what he said.
A．one B．it C．/ D．that
— Have you been here before?
— Yes. This is the third time that I ______ to Shanghai.
A．come B．came C．have come D．had come
The number of the teachers who ______ cars in our school ____ increasing very fast.
A．own; is B．owns; is C．own; are D．owns; are
I hadn't seen her for 10 years, but I ____ her at once.
A．realized B．recognized C．knew D．found
为庆祝6月5日“世界环境保护日”，某英文报社将举行一次英文作文竞赛，呼吁人们保护环境，提出有效的保护措施。请以下面的内容为参考，写一篇文章投稿。
1. 回收利用有用物质，掩埋有害物质；
2. 废水、废气要净化；
3. 植树造林，保护环境；
4. 保护海洋，禁止过度捕鱼；
5. 充分利用自然资源。
注意：
1. 词数：120左右；
2. 可适当发挥，但不要逐句翻译。
