Correct any mistakes in the following sentences. The mistakes are all

Correct any mistakes in the following sentences. The mistakes are all related to word order.
1. This leaves intact for at least six weeks the sample.
2. Many are the substances that are harmful to human beings.
3. This book shares with the previous one several aspects.
4. For several years with this system we have had problems.
5. The female chimpanzees immediately after giving birth are generally quite weak.
6. After the written examinations each student has between May and June an oral exam.

8. In English is not commonly