The first day the week is-------------------

The first day when we met / The day when we first met.这两种都可以吗? the first day of the first day of the 有没有in the first day,on the first day on the first day还是in the first day the first day _ school the first day的汉语 Today is the first day of the new term,teacher let us introduce ( )in class.(we) The first day the week is------------------- The first day of the week is_______. s____is the first day of the week first day前要不要加the?是The first day 还是直接说First day? on first day 对还是 on the first day 对 on the first day还是in the first day还是at the first? first,we have the seed ( )( )the lions first,shall we? ___(介词) the first day of the first lunar month. is on the first day of the first lunar month