Question

[Súi Tùng]

The last time he visited his grandparents was month ago

=> He hasn't

Giúp e với ạ

Answer 1

[Bagel]

.............visited his grandparents for month

-S+last+V(ed/bất quy tắc)+was+khoảng thời gian+ago

=S+hasn't/haven't+PII+for+khoảng thời gian

Answer 2

[Knguyenn (07)]

He hasn't visited his grandparents a month ago