Since nothing is underlined, I am going to make an educated guess that the underlines clause is "who had worked with the business person". If that is the case, the correct answer would be D - adjective clause. It is a relative clause, to be more precise, because it starts with a relative pronoun "who", but that is a part of adjectival clauses, so that is the correct answer.
Answer:
Cross out did before invited
Comma after yesterday
Add "-ed" after visit
Add "-ed" after tour
Add "-ed" after watch
Add a comma after later
Cross out 'are'
Our corrected sentence should look like this;
<em>Hello from London. Our friends invited us here for a week. Yesterday, we visited Big Ben, and we toured Buckingham Palace. This morning, we watched a cricket match. Later, we walked around Piccadilly Circus and enjoyed coffee and sandwiches at a cafe.</em>
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Hope this helps :)
The apothecary gives Romeo a poison that he requested, because he thought Juliet was dead.