A:will
B:would
C:should
D:must
句型转换。
汽油的热值为4.6×107J/kg,它的物理含义是完全燃烧____ 的汽油,放出的热量为4.6×107J.
下列词语中含有光源的是()
—We failed in the singing competition.—_______. Better times are waiting for you.