________they decide which college to go to，students should research the admission procedures.
A.As B.While
C.Until D.Once
______ the mother really doubts is______her son will join the army soon.
A.That; what B.What; whether C.That; whether D.What; that
I can’t stand ______ while speaking.
A.to interrupt B.to be interrupt C.interrupting D.being interrupted
—“Courage, kindness, friendship, character” are the qualities that ______ us as human beings, and push us, on occasion, to greatness.
—Absolutely.
A.define B.explain C.state D.fulfill
What is most significant is the way ______ people have worked in harmony with nature.
A.which B.in which C.for which D.on which
The special knowledge is ______ through families, which means that new generations continue to use ancient methods to maintain the tradition.
A.taken down B.turned down C.stepped down D.passed down
