“Please accept my condolences” is very formal, you would use it for a more sensitive subject such as the death of a family member. If your friend broke her phone, you would simply say “I’m sorry!” Or “I’m sorry to hear that!” If you’d like to dive deeper into conversational English, book a general English class with me!

Great! The last sentence should be “during his work on his first two books”, or “while working on his first two books.” If you do a lot of writing in English, I offer a formal writing course that aims to improve your writing fluently and use of formal grammar!

“Is accounted for” can mean two things: to take something into consideration— like in an experiment, you need to account for several variables (Such as time, Weight, distance, anything being measured that has an impact on the outcome) The second, is to know where everything is. For example, the teacher takes attendance at the beginning of class and says “Everyone is accounted for!” This means the teacher knows where every student is. The example you gave is the first definition, the difference across socio-economic groups is being measured, or accounted for as it will have an impact on the result is the study. Does this answer your question? If you’d like to take a closer look at idiomatic phrases such as these, book a lesson with me and we will dive deeper!

No, “Speaking of which” is technically an idiom— a phrase that doesn’t make sense on its own, but culturally carries a different meaning. For this reason, you cannot replace “which” with “that”, simply because “Speaking of which” is a complete phrase on its own. If you’d like to dive deeper (another idiom!) into idioma and common phrases, book a general English lesson with me and we will practice more!

Typically, no, unless in very informal conversation. You can make a statement omitting the modal verb, such as “Ah, sun’s shining!” Or “Storm’s passed.” Keep in mind this is used in speech, not formal writing. If you’d like to delve deeper into questions like these, book a lesson with me and I will be happy to help you reach your English goals!

You got it! “Which one wins out” means “Which one is better?” However, it is typically used when two or more things are very similar, or it is a close comparison. For example, you wouldn’t say: “In the end, the fastest runner won out among his opponents.” A better example would be comparing two cars, a Honda and a Toyota. The Toyota wins out in safety features, so in the end, I decided on the Toyota. If you’d like to delve deeper into phrases and terms like these, book a lesson with me and I am happy to help you reach your language goals! Kindly, Jeanna

“A” is the correct answer. To work “at” the airport means you are working for the airport as a company itself, for example, airport security, the ticket counter, or maintenance. To work “in” the airport implies a specific location within the building of the airport. For example, I work at a restaurant in the airport. I work at a store in the airport. In these scenarios, you work for a separate company located within the airport, but not for the airport itself. If you’d like to learn further about grammar points such as these, book a lesson with me and I am happy to help! Kindly, Jeanna