ai giúp e câu b với ạ

thánh nào giúp e zứi, e cần rất gấp (riêng câu b lm 2 cách ạ) 

lm ơn giúp e với

19: He asked me what I (do)______after I had graduated from university.

20: He (tell)______me that he is leaving that afternoon.

21: They asked me how many children there (be)______in the school.

22: The scientist said the earth (go)______around the sun.

23: The porter said that he would wake me up when the train (arrive)______in Leeds.

24: He asked his girlfriend where she (be)______the night before.

25: She said that she (bear)______in 1987 but I don’t believe. She is much younger than her age.