B1:
1,was having
2,hasn't slept
3,has already brushes
4,informed
5,Did..drink
6,Why didn't you leave
7,were
8,Did you visit
9,hadn't acted
10,has just wrote
B2:
2,They didn't meet each other before came there
3,...mình ko thấy câu 3 đâu cả :v
4, We watched TV after I had finished all chores
5,Which channel will you watch before tune in this one
6,By the time we graduated,he has worked for 5 companies
7,Before he read the book,he hadn't bought it
8,I have just called her after they cancel the interview
9,They left when I called
10,Lesson had started by the time I came