My mother forgot _____ the car key insides, so she had to come in again
Question: My mother forgot _____ the car key insides, so she had to come in again.
A. leave
B. left
C. to leave
D. leaving
Question: My mother forgot _____ the car key insides, so she had to come in again.
A. leave
B. left
C. to leave
D. leaving
Đáp án: D
Giải thích: forget Ving: quên đã làm gì
Dịch: Mẹ tôi để quên chìa khóa xe trong nhà nên phải vào lại.