下列()中没有轻声音节。
C
暂无解析
We_________thelessons_________oflastmonth.
Thenumberoftallbuildings__________greatlyinTianjininthelastfewyears.
__________twenty-fifthofDecemberis__________ChristmasDay.
I_________whenIwasayounggirl.
计算行列式=（）
