Complete the sentences using the words from the word search.

Here are the answers to complete the sentences, based on the word search in the image: 1. Albert Einstein's theory of relativity is very important. *Explanation: The word 'theory' is found in the word search, and it fits logically into the sentence.* 2. The Past Simple of sell is sold. *Explanation: The word 'sold' is the past tense of 'sell' and is found in the word search.* 3. I use a web site to search online. *Explanation: The word 'site' is appropriate in the context of searching the internet and can be found in the image.* 4. YouTube is my favourite camera. *Explanation: The word 'camera' makes sense here. A camera is often used for creating YouTube videos.* 5. I eat too much and my tummy hurts. *Explanation: The word 'eat' logically fills the blank and indicates the cause of the tummy ache.* 6. I can message you on Skype but I haven't got a cam, so I can't see you. *Explanation: Here the word 'cam', short for webcam, completes the sentence. This implies that they cannot see the other person during the Skype call because they lack a webcam.* 7. I can swim when I was three. *Explanation: The answer is `can`.*