He__________ he would be able to leave tomorrow, but it's beginning to took difficult.

A．hopes

B．was hoping

C．had hoped

D．hoped

含水层是指：（）。

A、能够透过并给出相当数量水的岩层

B、不能透过与给出水

C、透过与给出的水量微不足道的岩层

D、不能能够透过但能给出相当数量水的岩层