1.We(study) have studied almost every lesson in this book so far
2.After Gagarin's death,his hometown(name) was named after him.
3.We stopped by Tom's house when he(play) was playing the guitar.
4.the match(begin) had begun for ten minutes by the time we arrived at the stadium.
1/ If Nam had had enough classes, he wouldn't have failed in the last exams.
xin hay nhất ạ