【C2】______A．hasB．consistC．maintainD．is made up

A built－up exhaust valve is one in which ______.A.the stem and heads are made of different

The human body is composed of organs, each ______ a definite job to do.A．hasB．hadC．havingD

The medical team is ______ two doctors and two nurses. A. made of B. made up of C.

Our whole physical universe, when______to the simplest terms, is made up of two things, en

He made up a good __________for staying at home.

Much _____ said about the problem but nothing _____ been done so far .A.were，hasB.is，has