— Do you think it is ________ useful book?
— No. I got ________ "D" in my writing exam last week after I read the book.
A.a; the B.a; an C.the; a D.a; a
亲爱的同学们，你们即将毕业，回首初中三年，你有哪些美好的回忆。假如你是学生代表Jack Brown，请在毕业典礼上发言，谈谈自己的感想。
要求：思路清晰，语法正确，书写规范。
My dear teachers and classmates:
How time flies! We have spent three years in this school. It’s time to say goodbye to our teachers. It’s a great honor for me to be here to express my feelings._________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________________
Best wishes to you!
Jack Brown
我们难以置信地直盯着燃烧的大楼上升起的黑烟。
We stared in ________ at the black smoke rising above the ________ building.
在新的旅行启程之际，别忘了你来自何处。
As you set ________ on your new ________, you shouldn’t forget where you came from.
房子的顶部是一条翻转过来的旧木船。
The top of the house is ________ old boat turned ________ down.
如果鲨鱼的数量降至过低，就会给海洋生物带来危险。
If numbers of sharks drop ________ low, it will bring ________ to all ocean life.
