in shape ----> healthy

　　in the dark ----> not understand

　　in the red // raise one's dues ----> increase the membership fee

　　in time // no way ----> be late

　　in upside down ----> not correctly positioned

　　inexpensive ----> affordable // availability

　　inexpensive ----> affordable

　　inquire ----> check for

　　inside out ----> on the wrong way

　　insist on being so independent ----> should get someone to help with

　　internship ----> get a good job later

　　introductory course ----> begin to study

　　irregular ----> infrequent

　　irrelevant to ----> have little to do with

　　It came in the mail yesterday from my mom and dad. ----> It was a present from his parents.

　　It could be better. ----> It's not very good.

　　It could be worse. ----> It's not too bad.

　　It couldn't be better. ----> It's the best/excellent.

　　It couldn't be worse. ----> It's the worst/too bad.

　　It doesn’t matter. ----> Sb. should not apologize.

　　It is incompressible ----> It can't be compressed

　　It just makes me uncomfortable to ask my friend to wait on me. ----> He doesn't like to bother people.

　　It looks a lot worse that it feels. ----&