My school kids,_______parents most have gone to work in cities, are left behind and taken care of by their grandparents.
A.whom B.whose C.of whom D.of whose
Considering the heavy pollution caused by fossil fuels, many people are _______ the use of alternative energy sources .
A.accenting for B.catering for C.compensating for D.pushing for
Theoretically, there are many solutions to such a problem, but it is not easy to find________easy to put into practice.
A.that B.one C.it D.the one
To everyone's surprise, the three-year-old boy recited Three-Character Canon without making a single .
A.slide B.slip C.sneeze D.squeeze
Mr. Smith, what do you think happiness mean to you,_________with family and friends or something else?
A.to surround B.surrounded C.to be surrounded D.being surrounded
For students who don't intend to improve themselves in study and always participate in various social activities, college is______ a social center.
A.at lowest B.at best C.at least D.at worst
