Chia dạng đúng của động từ trong ngoặc

15. Where_______________ (she/be)? I _______________(wait) for her

16. _______________(they/know) that water _______________(boil) at 100 degrees Celsius?

17. My parents _______________ (build) the house in 1985.

18. He _______________  (not/marry) her because she _______________  (break)

 up with him last year.

19. Look at her!  _______________ (sit) in the park over there. Isn't she wonderful?

20. _______________ (he/like) the book he  _______________ (borrow) yesterday?