`1.` It was such a hard cake that I couldn't eat it.

`2.` She told me to keep quiet if I wanted to stay there.

`3.` She said that she would hang in her assignment to the teacher the next day.

`4.` I like reading books more than watching TV.

`5.` Biologists said they had never seen that species of lizard before.

`6.` Tom asked Dean how people from Venus could travel around.

`7.` If people hadn't dumped things in the river, it wouldn't have become polluted.

`8.` If you revise your lessons, you won't fail the exam.

`9.` Nick asked his teacher if those people would become good friends with humans.

`10.` That car was too expensive for him to buy./That car was so expensive that he couldn't buy it.

1. It was such a hard cake that I couldn't eat it (such a/an/the+B+that...)

2. She told me that I had to keep quiet if I wanted to stay there

3. She said (that) she would hand in her assignment to the teacher the next day

4. I like reading than watching TV (?)

5. Biologists said they had never seen this species of lizard before

6. Tom asked how the people from Venus could travel around

7. If people hadn't dumped things in the river, it wouldn't become polluted

8. If you revise your lessons, you won't fail the exam

9. Nick asked his teacher if those people would become good friends with humans

10. That car was so expensive that he couldn't buy it