Mastering Spoken English: 10 Simple Phrases to Greet a Friend 

"Hi! How are you?"

"Hey there! How's it going?"

"Hello! Long time, no see!"

"Hiya! What's up?"

"Hey! Good to see you!"

"Hi! How have you been?"

"Hello! What have you been up to?"

"Hey! How's your day been?"

"Hi there! How's everything?"

"Hey! How's life treating you?"