It’s a half past quarter-to-three

It’s a half past quarter-to-three It's (a) quarter past\after\to three. It's a quarter past three.（改为同义句） It's a quarter past ten和It‘s half past ten 下面分别是几点 eleven twenty、three to three、a quarter past two、half a quarter to eight half past six a quarter It's a half past three now划线部分提问 It's a quarter past seven now half past 0ne ,前不加a,而 a quarter to What is the time?-____.A.It's half to seven.It's half past s it's a quarter to nine,语法上to能否改成past? It's (a quarter to one).a.fifteen past twelve b.one fifteen