The policeman came up to the house, whose door was open, ________ there for a while, and went in.
I fell asleep while working on this paper ______ the computer on.
______ me when you get it through and I’ll pick you up at your work place.
It is good manners to eat up ______ is left in your plate.
——These grapes look really beautiful.——They ______!See the price,$3.99 a pound.Very expensive,aren’t they!
A huge amount of oil was spilt on the East Sea,the causes of ________ are still under investigation.