题目内容：

 

1.Water sources have become badly polluted. As a result, some of the water is unfit to drink.

Water sources have become __________ badly polluted __________ some of the water is unfit to drink.

2.When I was enjoying the beautiful scenery around, I noticed something unpleasant.

When I was enjoying the beautiful scenery around, something unpleasant __________.

3.While I admit that there are problems, I don’t agree that they cannot be solved.

Despite __________ I admit that there are problems, I don’t agree that they cannot be solved.

4.There are various different styles of stand-up comedy.

There are __________ different styles of stand-up comedy.

5.Whatever the reason, research shows that in the end, the English saying may be true after all.

__________ the reason, research shows that in the end, the English saying may be true after all.