Unit 4 SharingⅠ.高频单词思忆1.You should go now,     (不然) you’ll miss the bus.2.He    (捐献) a sum of money from his private purse.3.The boy dreamed of becoming an (宇航员).4.The place where he was born was very     (偏远).
otherwise
donated
astronaut
remote
5.His low    (收入) can’t provide for such a big family.6.The university is going to have an       (庆典).7.He can’t grasp the basic c    of mathematics.8.After a while his eyes a     to the dark.9.They carried out s     checks at the airport.10.The organiza ...