bài 1 : chia động từ trog ngoặc 1. We believe scientists ------ (find) cures to HIV soon. 2. He said he ------( not like) science when he was small. 3.He said that before the invention of the airplane people----( travel) by train and car. 4.He predicted that scientists______(develop) medicines to lengthen our life soon. 5.He was proud that he____ (award) the Kovalevskaya Prize.