— Can you meet me at the airport at 9 o’clock next Monday?— I’d like to, but I ________ an English class then.
. —When will you be back, Peter? —___________ a couple of days.
. . All books ___________ to the library more than three days late will be subject to a fine.
. When he was only thirty years old, he had already experienced ___________ most people only experience when they are much older.
. ___________ in the sports world, a sportsman needs to train constantly to keep himself in best condition.
. Listen, Mike. She ________________ have done it. She's been with me at the shop all day.