16.A. Checking in & out: Listening
16.B. Customer / Clerk: Practice
16.C. Practice checking in & out
16.D. Checking in & out 1
16.E. Checking in & out 2
16.F. Checking in & out 3
16.G. Checking in & out 4
16.H. Checking in & out 5
16.I. Match question with answer
16.J. Crossword: Checking in & out
