A.Because of the bad weather.
B.Because it broke down.
C.Because of the crowd outside a drugstore.
D.Because the traffic was heavy.
A.More work as an instructor.
B.A higher salary.
C.A longer vacation.
D.A research assignment.
A.He'll start next week.
B.He wouldn't enjoy it.
C.He needs time to decide.
D.He wants his adviser's opinion.