Would you check my sentences?

Dear native English speakers,
Would you please check my sentences?
1 Nobody can tell when the next big earthquake will happen.

2 No other animals can run as fast as cheetahs.

3 None of the people in this company can speak Japanese.

4 I hardly know why those people came here.

5 Few people visit that small village.

6 I know little about your country.

7 I seldom come to this lake.

問２ 否定語を用いて英訳しなさい。
1 彼は，めったに肉を食べない。 He seldom/rarely eats meat.
2 誰もこの問題が解けない。Nobody (/no one) can solve this problem.
3 彼らは、初めて日本に来たとき、ほとんど日本語が話せませんでした。[hardlyを用いて]
They could hardly speak Japanese when they came to Japan for the first time.
4 私達は，その時まで、iPSのことを，ほとんど知りませんでした。[littleを用いて](過去形)
We knew (/had known) little about iPS until then.
5 冷蔵庫の中には、ほとんど卵がなかった。[冷蔵庫＝ refrigerator]
There were few eggs in the refrigerator.
6 その村について知っている人はほとんどいない。[Fewから文を始めて]
Few people know about the/that village.
7 ツバメほど速く飛べる鳥はいない。[ツバメ＝ swallow](単数か複数か注意せよ)
No (other) birds can fly as fast as swallows.
8 その病気(disease)についての情報(information)がほとんどない。
There is little information about the disease.

Thanks in advance.

Hirashin

The English is fine, but are you sure about swallows being the fastest birds? I just checked several sites with lists of the world's fastest birds (both in a dive and in level flight) and I don't see the swallow even on a Top Ten list.

Thanks for the help, Mike.
Well, it seems that swallows are not the fastest birds. According to Wikipedia,
the peregrine falcon is the world's fastest bird. Then I should modify it.
ここには、ツバメほど速く飛べる鳥はいない。
No other birds here can fly as fast as swallows.
Hirashin