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)