________ have an internal clock that controls the beating of our heart, and the ________ of our breathing.
A．Human being; steps B．Humans; pace
C．Human beings; steps D．Man; pace
Many companies in Guangdong are facing a serious labor ________ following the Rabbit Year’s Spring Festival.
A．lack B．shortage
C．absence D．storage
People all believe that ________ to free trade destroy wealth, benefiting no one in the long run.
A．administrations B．attempts
C．progress D．barriers
The girl got into ________ panic when she heard ________ frightening news.
A．a; the B.a; a
C.the; the D.the; a
—Do you know what EU stands for, Tommy?
—Sure.It stands for the European Union，________ European political and economic organization that encourages trade and friendship between ________ countries that are members.
A.an; the B.a; the
C.the; / D.an; /
It is announced that________$20,000 reward will be offered for ________ return of the stolen sculpture.
A.a; the B./; the
C.a; a D./; a
