____ the workers’ working conditions, the boss will allow them to have a coffee break.
-- Sorry, it's already 6 o’clock. I have to be off for an appointment. --- OK. ________.
--Why do you choose to work in an international travel agency?---Well, you know, English is my ________. So it is my best choice.
As time went by, the plan stuck ________ fairly practical.
Our manager ________ for Shanghai in a few days and he has asked me to find out when the earliest plane ________ next Wednesday.
Stephen Hawking believes that the earth is unlikely to be the only planet _______ life has developed gradually.