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.
34.I have had some bad times before, but seldom________so helpless as now.
33.With the car____down halfway on the road, we had great difficulty walking home in the snow.
32.---Honey, which movie should we watch tonight? ---I don’t mind which movie it is______there’s popcorn and soda.
31.After I became the manager, few occasions could I find________I have the time to sit down and enjoy a quiet dinner with my wife.
30.I wrote emails to my sister and brother last week. To my disappointment,_______of them wrote me back.