Question

We were sad to learn that several students were

Answer 1

B

词义辨析。hit out抨击；knocked over撞倒，撞翻；run across偶然发现，撞见；picked up拾起，捡起，用车接。句意：我们很难过的得知昨天几个学生被一辆汽车撞倒了。所以选B。