Answer:
1. Brian put on an apron <u><em>to avoid getting</em></u> his clothes dirty
2. Bill bought some flour <u><em>as he wanted to make</em></u> a cake.
3. She always wears oven gloves <u><em>so as not to burn</em></u> her hands.
4. The cook added more salt to the soup <em><u>in order to give it</u></em> more flavour.
5. It <em><u>was such a busy restaurant</u></em> I couldn't get a table.
6. She threw out the old meat <u><em>as she might get
</em></u> food poisoning.
7. This <em><u>dish is so</u></em> tasty.
8. I will make some sandwiches <u><em>in case the children get</em></u> hungry.
Explanation:
The given sentences are two independent clauses to be revised into a single sentence. And to join the two into one, the words given in bold are to be used along with other added words to make flowing, continuous conjunction to merge the two clauses.
The final, merged sentences are as follows-
1. Brian put on an apron to avoid getting his clothes dirty
2. Bill bought some flour as he wanted to make a cake.
3. She always wears oven gloves so as not to burn her hands.
4. The cook added more salt to the soup in order to give it more flavour.
5. It was such a busy restaurant I couldn't get a table.
6. She threw out the old meat as she might get food poisoning.
7. This dish is so tasty.
8. I will make some sandwiches in case the children get hungry.