2000 câu trắc nghiệm tổng hợp Tiếng Anh 2025 có đáp án (Phần 40)

When I called them, they didn’t answer. They pretended __________ already.

210/331

When I called them, they didn’t answer. They pretended __________ already.

A. to sleep

sleeping

having slept

to have been sleeping

Giải thích

Đáp án: d