__________ does it take you to drive to Changgong to work every day?—About one hour and a half.

My pen is missing. I can’t find it anywhere.—I’m afraid you have to buy _________.

_______ was a struggle for me to remember all the strange faces and new names.

Mrs. Lin is not only strict__________ her students but also __________ her teaching.[ ]

We can get fresh water from rain, from rivers, or from _______ the ground. [ ]