1 . Through intense effort，Yuan Longping o________（克服）enormous technical difficulties to develop the first hybrid rice. （根据中英文提示填空）

2 . You must ____________________ you are giving them an option. (clear)
你必须讲清楚你是在给他们一个选择。

3 . Sure enough, going down the stairs and onto the platform is like ______.
果不其然，走下楼梯，来到站台上就像跳进一座正在喷发的火山一样。

4 . I have flown a little over all parts of the world; and it is true that geography has been very useful to me. __________ __________ __________(瞥,看一眼) I can distinguish China from Arizona. （根据汉语提示完成句子）

5 . 不管发生什么，我们会让这份喜悦始终伴随着自己。(让步状语从句)
________________, we will always carry this joy with me.

6 . 此外，由于不断提高的计算机能力，医学和环境科学也取得了重要进展。
In addition, important advances have been made in medicine and environmental science ________ .

7 . Although email has been around since the earliest days of the Internet, it continues ________ (很有价值) and relevance in the marketplace. (根据汉语提示完成句子)

8 . Shall I be believed when I say that, at the depth of thirty feet, I could see as if I was___________(在大白天)? (根据汉语提示完成句子)

9 . I know it ________ ________ ________ to take tough measures against COVID-19 during our daily life, although it seems so inconvenient. （值得）(根据汉语提示完成句子）

10 . I have also been taking driving lessons, and in fact I will be taking my driving test on the very day I turned 18. My mom worries about me being __________ __________ __________(驾驶汽车) . （根据汉语提示完成句子）