I haven’t seen her _____.

I haven ’t seen her () she left Guangzhou.

I haven ’t seen her while she left Guangzhou.()

I haven ’t seen her when she left Guangzhou.()

I haven ’t seen her from she left Guangzhou.()

I haven ’t seen her since she left Guangzhou.()

I haven't seen her（）she left Guangzhou.

我好久没有见到你了（）

I haven't seen you for a long time.Do you __ teach English？

— I haven’t seen Bob lately. ______— As a matter of fact, he is ill.A、Where is he？B、Why？
— I haven’t seen Bob lately. ______
— As a matter of fact, he is ill.
A、Where is he？
B、Why？
C、How is he？