1-C. (2) It's a disadvantage to use a foreign language in business.(2) It's a disadvantage to use a foreign language in business.
(2)不利です、外国語を使用することはダヨ、ビジネスでダヨ。
2-C. In business situations, when you're negotiating with people from other countries, it's obviously a disadvantage if they know your language but you don't know theirs.In business situations, when you're negotiating with people from other countries, it's obviously a disadvantage if they know your language but you don't know theirs.
3-C. Some universities in non-English-speaking countries now offer courses in English to overcome their disadvantage.Some universities in non-English-speaking countries now offer courses in English to overcome their disadvantage.