You fly across several time zones. You will experience jet lag. (complex sentence)

People invent new words for their language. They also borrow words from other languages. (simple sentence)

I won't pay these bills. You explain them to me right now. (complex sentence)

The original project design should be improved. We'll have to drop it. (compound sentence)

Would you look after the children? I am doing the shopping. (complex sentence)

Mary is a considerate teacher. She is very popular among her students. (simple sentence)

It was broad daylight. All the passing cars had their headlights on due to the thick fog. (compound sentence)

The potato can grow in hot climates. It does not matter. The climate is wet or dry. (compound-complex sentence)

Joanna has had several short-term roles. Working as a secretary, as an office receptionist, and as a sales assistant in a clothing store.

The new teacher was under heavy work pressure at that time, she could not fall asleep at night.