Considering the groups of words below, point out the option in which the group of words are not homophones.

Choose the correct option to complete the following text:
I‘m sorry for ______ such a long time to write back. I‘ve been so busy at work lately. I‘ve also not been studying very hard and my French exam is next month! To ______ you the truth, I‘m getting a bit nervous and will have to ______ some revision! The good news is I‘m going on holiday with my parents before the exam, so if I get the chance I‘m going to try to ______ an effort and work on my French. Anyway, the reason I‘m writing is to ask you if you would like to come to the UK. I know you haven't been here before and we could ______ sightseeing. Let me know what you think. 
Adapted from: https://www.flo-joe.co.uk/preliminaryenglish/vocabulary/pet-collocations.htm (Accessed on 01.21.2022) 

Read the following paragraph and choose the correct option for the question that follows:

I‘ve got a young friend, he‘s only 25, but he fits the bill perfectly. He‘s single and he‘s hungry. He‘s willing to start from scratch and, best of all, he isn‘t afraid of putting his nose to the grindstone for those 80-hour weeks. He decided to take the bull by the horns by going starting up his own business. He found a software developer who knew the internet inside out. This young man was also very ambitious. He left his safe job at the drop of a hat. They were both reaching for pie in the sky, and they were ready. They also were lucky. They founded a startup and got into the whole social networking business.

... Ver mais

According to researcher Vaclav Smil, who was mentioned in the article, the advent of fertilizers which were composed of the three chemicals N, P and K was of great importance for what was called the 1960’s Green revolution. Concerning the importance of nitrogen fertilizers, choose the correct alternative. 

In the last paragraph of the text an action plan is said to have been developed. This measure was taken so as to 

Considering what was said about the use of nanotechnology in the filtration of water in the article, choose the correct alternative. 

In regards to the process of desalination of briny water or seawater the text 

After reading the following passage, choose the correct answers to the question.

Which of these sentences is TRUE?

According to the text above, it is accurate to state that:

After reading the following passage, choose the correct answers to the question.

According to the ideas proposed, choose the correct option.