问题
A low-carbon(低碳) lifestyle has an effect our daily life. People are paying more and more attention to energies these days.
A:in; save
B:in; saving
C:on; save
D:on; saving
B:in; saving
C:on; save
D:on; saving
正确答案是：
同类题型
On National Day there are more than five __________ people in the zoo.
This term, we have ________ new subject—physics. It’s interesting.
Tom realized that he ________ his physics book at home when he reached school．
She had never been to the great Wall before. Today she saw it ________ the first time.[ ]