Здравствуйте! В подобных сочетаниях с числительными "два, три, четыре" прилагательное обычно ставится в форме родительного падежа, если существительное относится к мужскому или среднему роду, и в форме именительного, если существительное женского рода. Поэтому "два веселых гуся", но "две красивые девушки". Источник: http://new.gramota.ru/spravka/buro/search-answer?s=%D1%81%20%D1%87%D0%B8%D1%81%D0%BB%D0%B8%D1%82%D0%B5%D0%BB%D1%8C%D0%BD%D1%8B%D0%BC%D0%B8

Hello! In your context the first option is better. Please, check the link for more details and the difference between the two: https://jakubmarian.com/in-the-case-vs-in-case-in-english/. "In case of working" means "if I work", so I would use "will": In case of working from home what will happen to an employee's travelling allowance? Hope it'll help!

Nobody is perfect, but for me the «PERFECT TEACHER» is a teacher who DOES not only teach but also helps A student to become a better person. THE perfect teacher shares his knowledge with students and showS them THE right path. THE teacher WHO helpS students in studies and is also friendly BY nature. I think, THE perfect teacher needS TO be well-educated AND have knowledge from different areas, not only his subject. He needS TO inspire respect and trust. If A teacher IS like a good friend for THEIR studentS, they can come to THEM and talk about their liVES and share their problems. IN most cases children can’t share their problems with strangers like A school PSYCHOLOGIST. An ideal teacher leaves a life-long impression on THEIR students and impacts their mind in a positive way. THEY ARE much valued assetS, without whom one can't imagine THEIR life. In fact, THE perfect teachers are as important as our parents. Not even a single day of our life will seem to be complete without them. They are the ones, whom the students can idolize and look up to. Why DID I choose THE Institute of foreign languages and international tourism to be trained as a teacher? I can name two reasons. Firstly, I hope TO find good friends here. People who haVE THE SAME worldview AS ME, who would like to becOme THE perfect teacher for THEIR students, who want to help other people and make our world better. I think, I will find theM here. THE Other reason why I chose our institute IS THE NUMBER OF possibilities to have international experience in my field. I WILL be able to have internships in different countRies AND exchangE cultures and experience with different people ALL OVER THE world. Hello! I've capitalized my corrections. Hopefully, you will find them helpful. Please, feel free to check my teacher's profile to learn more about lessons I offer if you need a more structured approach to practising grammar. Good luck!

Hello, the Oxford Learner's Dictionary identifies this word as both countable and uncountable, giving examples of each form in context: https://www.oxfordlearnersdictionaries.com/definition/english/surplus_1?q=surplus. Another source https://www.wordreference.com/definition/surplus sheds more light on nuances in meaning of each grammatical category: 1. something that remains above what is used or needed: [countable]a surplus of oil. 2. an amount, quantity, etc., greater than needed: [uncountable]the labor surplus in Sweden.