John fell of the ladder when he __________ the wall.
A. paints
B. paint
C. was painting
D. painted
Đáp án C
Giải thích: Hành động đang xảy ra (QKTD) thì hành động khác xen vào (QKĐ)
Dịch: John ngã thang khi đang sơn tường.
Cinderella lives unhappily because her step mother isn’t kind __________ her.
In the story, the princess was walking in the campus of the cattle when an eagle __________.
Choose the letter A, B, C or D to complete the sentences
My grandmother often told __________ to me when I was young