The old man has a son and two daughters, ______treating him well, ____makes him sad.
Evidence has been found through years of study______children’s early sleeping problems are likely tocontinue when they grow up.
--- Shall we go for a drink at one o’clock this afternoon?--- ______. Will two o’clock be OK?
The language training programme ______ teenagers who want to go abroad to study.
--- Do you think George has passed the driving test?--- No, If so, he ______ his car to our college yesterday.
--- What has become of the spaceship?-- It landed ______.