A lot of language learning,__________ has been discovered, is happening in the first year of life, so parents should talk much to their children during that period.
31.—Bad luck! I have left my dictionary at the dormitory. —__________.
30.The extra room________very useful when we had visitors.
29.Don’t touch anything.Better leave things_________they are until the police arrive.
28.You can ask him again if you like,but it won’t make any __________he will still say no.
27.—I can’t find Fred.He is not at home. —Why don’t try______him?