1. Mary___home when she met Dave a. came b. had come c. had been coming d. was coming 2. The war ____ out there years ago a. was breaking b. had broken c. broke d. have been breaking
1 câu trả lời
1, D was coming
_ When + S + V QKĐ, S + was/were + V_ing
_ diễn tả hành động đang diễn ra thì hành động khác xen vào
2, C
_ DHNB thì QKĐ: three years ago
_ Cấu trúc thì QKĐ: S + V (ed/c2)