2000 câu trắc nghiệm tổng hợp Tiếng Anh 2025 có đáp án (Phần 39)

I wasn’t sure how Belinda would react because I ________ her long.

305/500

I wasn’t sure how Belinda would react because I ________ her long.

A didn’t know

B wasn’t knowing

C hadn’t been knowing

D hadn’t known

Giải thích

Đáp án: D