1/phu thu?y song tren cat' tieng Anh goi la j`?
2/ what occur one time in the minutes,2 times in the moment but never in hour?
(dieu j` xuat hien 1 lan trong 1 ph, 2 lan trong hien tai, ko bao jo` trong 1 gio`)
3/ what city has no people?
(Thanh pho' nao khong co con ng song')
4/ If I jump into the water, what is my job?