1) He thinks that he will become an engineer.
2) She said that she knows mathematics well.
3) Ive decided that next year I will go on a vacation to the south.
4) He realized that he had made a serious mistake (или had made a blunder)
5) I did not know that you live in Moscow.
6) He thought that we had already translated this text.
8) He told me that he would meet me at the college.
9) I think that he will leave for Moscow tomorrow.
10) He understands that the job (или work смотря в каком контекста) is going to be hard.
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