In those days John with his classmates  _____  kept busy preparing for the exam.

A．is

B．are

C．was

D．were

患者胸胁支满，心下痞闷，胃中有振水音，脘腹喜温畏冷，背寒，呕吐清水痰涎，水人易吐，口渴不欲饮，心悸，气短，头昏目眩，食少，形体逐渐消瘦．舌苔白滑，脉弦细而滑。其治法是（）.

A.宣肺化饮

B.淡渗利水

C.温脾化饮

D.温化寒湿

E.逐水化饮