Choose the correct word or words from the parentheses and write them in the blank.

1		(While / When) Tom arrived at the airport, he was exhausted.
2		Tom called his uncle (after / after that) he arrived at the airport.
3		Tom arrived at the airport. (Then / Meanwhile) , he called his uncle.
4		Tom called his uncle. (After / After that) , his uncle picked him up.
5		(While / After) Mary was traveling, her boyfriend was working.
6		Elizabeth was traveling. (Since / At the same time) , her boyfriend was working.
7		Juan was looking for a job in Mexico. (Meanwhile / After) , many of his friends were working in the United States.
8		(Meanwhile / While) John was doing his homework, the phone rang.
9		John was doing his homework (meanwhile / when) the phone rang.
10		(When / While) the phone rang, John closed his books.