下面哪些是买断式回购市场的交易品种？（）
A、OR001
B、OR002
C、OR014
D、OR021
参考答案：A, C, D
It’s ten years since he _________ his hometown.
A．left
B．leaves
C．has left
D．is leaving
The girl _______ red is my friend, Jenny.
A. in B. on C. in a
