LÀM BÀI: EXERCISE 49.1
Vui lòng đăng nhập và đăng ký (miễn phí) khoá học (EG1-B) English Grammar 1-B để nộp bài và xem kết quả.
Answer these questions with I don't know where/when/why ... etc
1.
Have your friends gone home (where) .
2.
Is Kate in her office? (where) I don't know .
3.
Is the castle very old? (how old) .
4.
Will Paul be here soon? (when) .
5.
Was he angry because I was late? (why) .
6.
Has Emily lived here a long time? (how long) .
