The chairman thought necessary to invite Professor Smith to speak at the meeting .
--Hi, Jack! We’re going to have a walk along the beach this Sunday.--_______. I love sunshine.
________ the market in three months, the new product will make a big difference.
Mary _______ have arrived ten minutes earlier but her flight was held up because of the heavy fog.
________ you have learned should be made good use of ________ making mistakes in the coming college entrance exam.
I plan to move to the countryside as the air there is much fresher than________ in the city.