1 . When explaining to him, I had made it as plain as I could so ________he could not fail to take my meaning. （用适当的词填空）

2 . ________ you do, don’t look for a pay increase when you know the company is going through some difficulty. (用适当的词填空)

3 . Lifelike shrimps play a key role in Qi’s vast body of visual artworks. The “shrimps” are so popular _______ they have become synonymous with the painter himself. (用适当的词填空)

4 . _______ companies changed the sites where they used noisy compressors(压缩机) to help produce natural gas, some of the previously noisy sites had become quiet. (用适当的词填空)

5 . Yet _______they belong to completely different eras,  appearances and purposes, they are both equally representative of this city. (用适当的词填空)

6 . Since the Autumn Equinox, most of the areas in China have entered the cool autumn._______ the cold air southward meets the declining warm and wet air, precipitation(降水) is the result. (用适当的词填空)

7 . Helen had just put down her cellphone ________she regretted refusing Peter’s invitation to the party.(用适当的词填空)

8 . ________(While/When) it is raining hard, they continue to help the farmers harvest the crops in the field. （用适当的词填空）

9 . I am firmly convinced (深信) that no matter ________ chances arrive, we are able to seize them as long as we are well prepared. （用适当的词填空）

10 . Given ________ you have much experience in managing the Students' Union, I think you are more suitable for this position than other candidates. （用适当的词填空）