have sport at a quarter past four.it's quarter past eight .为什么前一个用a quart 后...have sport at a quarter past four.it's quarter past eight .为什么前一个用a quart 后一个不用a而后一个不用a
问题描述:
have sport at a quarter past four.it's quarter past eight .为什么前一个用a quart 后...
have sport at a quarter past four.
it's quarter past eight .为什么前一个用a quart 后一个不用a
而后一个不用a
答