câu trần thuật, câu tường thuật

1," whose newspaper are these" the hotel servant asked a guest

2, "where can we meet to discuss our assignments tomorrow?" the motor asked her classmate

3, "what size are you and your husband?" the department store keeper asked mrs.white

4, "what kind of test vill i take if i want to attend this english course?" i asked a clerk

chỉ giúp e vs ạ

So sánh:

a)  5 6 −   − 7 12 + 1 24 và 2

b)  3 8   + 5 − 14 − − 6 21 và 5 21 − 2 7