Choose the correct item. 1.the escalators in the shopping centre / a) out of b) off 2.steve went to business trip. a) at b) on 3/professor reed . a) at b) in 4.it's to make rude comments. a) of b) for 5.would you please pet while i'm away? a) over b) after 6. essay and correct all the mistakes. a) up b) through