We were at home having our anniversary dinner when my uncle was calling to congratulate us last night.
We were at home having our anniversary dinner when my uncle was calling to congratulate us last night.
A. were
B. having
C. when
D. was calling
Đáp án D
Was calling -> calledMột hành động chia ở QKTD đang xảy ra thì có một hành động khác cắt ngang, hành động cắt ngang chia ở thì quá khứ đơn
