500 bài viết lại câu ôn thi chuyên Tiếng Anh có đáp án cực hay (Phần 1)
Xem toàn bộ quiz

I had lost his phone number, so I could not contact him before. (TOUCH)

6/110

  I had lost his phone number, so I could not contact him before. (TOUCH)

0/3000 ký tự
Giải thích

→ I could not keep/get in touch with him because I had lost his phone number.