What is difference between “I didn’t know you came on this trip” and “I didn’t know you were coming on this trip”here? Can I use past tense instead of past continuous here?

Hi. I need to rephrase a word "invention(s)". I doubt this is correct, as does the entire proposal. Help me, please. "Creating a television is the most effective development ("significant invention" is good but I neet to rephrase) because it is more valuable and practical for the siciety".

If I want to praise sth. (e.g. a book) in Mandarin Chinese and say "excellent!", can I use "优秀 - yōuxiù ? If not, what word/ expression would be better? Thank you so much for your help! <3

What does "new moon" and "waning moon(or full moon)" mean? (Does it mean the first days of the month and the last days of the month?

Привет)) im looking for a russian speaker who can video call once a week to practice. I ve been living in russia for a year now so my level is around B1. I can offer french and english))

Hello :) im looking for a serious language exchange partner from korea to video call once a week :) i can offer french and english.

Looking for a friend from South America to practice Portuguese can exchange English with

What are your favorite ways to celebrate Christmas?

"To establish a family and career, a virtuous wife and mother", when read upside down, becomes "to establish a family and career, a virtuous mother and a virtuous wife"! Chinese culture.

Hi, Please, could you explain the meaning of the word "thirsty" to me? What does it mean when someone says, "I'm thirsty"? Does he want a water? Or alcohol? Or juice? Or anything at all?