________ tomorrow, I would take a bus to school.

A．If it rains

B．If it was to rain

C．Should it rain

D．Rained it

赵XX，女，35岁。该患者二个月前与邻居口角后，胸闷胁胀，善太息，未经治疗，病情逐渐加重。来诊时症见胸胁 * * 少腹胀闷窜痛，情志抑郁，咽部有异物感，吐之不出，咽之不下，经行腹痛，苔薄白，脉弦。