Fill the gap with the most appropriate option from the list provided.

You can travel on your own, ......?

Fill each gap with the most appropriate option from the list provided. 

He does not seem to know how to solve the problem ...... ?

Choose the option that best completes the gap(s).

He wrote to you, .......?

Choose the option that best completes the gap(s).

You don't like Mathematics, ...... you?

From the words or groups of words lettered A to D, choose the word or group of words that best completes the sentence.
Mr. Smith had worked here before leaving for the U.K....?