8. Sometimes, people are not conscious of the importance of health. Only when they lose health ______ its importance.
(A) they know
(B) do they know
(C) that they know
(D) they do know
詳解 (共 1 筆)
未解鎖
they do know its imp...
私人筆記 (共 1 筆)
未解鎖
8. Sometimes, people...