1.We had learned "six" pop songs by the end of last week.
_______ ________"six" pop songs had you learned by the end of last week?
2.He went to the hospital"to have a check up on eyesight.“
______ _________he go to the hospital?
3.He lost"the key of his bike" on his way to the lecture.
_____did he_________on his way to the lecture?