1 . Some sounds cannot________ by the human ear.
有些声音是人的耳朵无法察觉到的。

2 . Under the________ conditions many children are going hungry.
在目前情况下，会有很多儿童忍饥挨饿。

3 . In the past, Sam ______________ (落后于) his fellow students in his study due to laziness, but now he has made up his mind to catch up with them. (根据汉语提示完成句子)

4 . ________, I could have tried harder but I still don’t think all this criticism is fair.
不可否认，我本来可以再努力些。尽管如此，我认为这些批评也并非完全公道。

5 . This drug can be safely used in_________with other medicines.
这药可以与其他药物一起安全服用。

6 . I think he ________ quite a lot when his wife left him.
我想他妻子离开他时，他一定很痛苦。

7 . Mary Shelley was just 18 when she wrote the horror________ ‘Frankenstein’. 
玛丽·雪莱 创作《科学怪人》这部恐怖小说名作时年仅 18 岁。

8 . Energy ________ reduces your fuel bills and helps the environment.
节省能源能减少你的燃油费，而且还有利于环境。

9 . Her latest film ____________ a lot of interest/excitement. (根据句意填空)

10 . Changing patterns of agriculture ________the countryside.
农业模式的变化正在危及农村。