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

2 . ________, 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。

3 . 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。

4 . When asked what a £40.35 meal for five people would cost each diner, they were unable to ____________. (根据句意填空)

5 . Not all the facts are made available_____us.
不是所有的情况我们都能了解。

6 . He was off school for a while and is finding it hard to ________.
他休学了一段时间，现在发现要跟上很吃力。

7 . Do you________to exercise indoors or out of doors?
在室内锻炼或是到室外锻炼你更喜欢哪一种?

8 . Children are often very good at________ into a new culture.
孩子通常很善于融入新的文化。

9 . Work out the exact design before you start_________.
开始施工之前要先搞好具体的设计。

10 . The grassland is an important_________for many wild flowers.
草原是很多野花的重要生长地。