When during separation solids and water accumulate in the solids holding space, the iquid seal is displaced to the bowl

— When do we have to pay the bill？

—____ December 30.

A、By

B、In

C、During

A.when

B.that

C.before

D.while

It is a process during ______ the body releases water to cool the skin.

A. when

B. which

C. where

D. that

When do we have to pay the bill？

()December 30.

A. By

B. On

C. During

A.during

B.when

C.while

A./; during

B.that; by

C.which; at

D.when; in

A.that

B.which

C.where

D.when