I would say it is B it. I'm not 100 percent on this one.
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>
Answer:
C. They give background information about the topic.
Explanation:
Sentences 2, 3, and 4 gives the reader background knowledge about what they're reading.