During the 1990s,是什么意思?“从1990年起”?啊弥陀佛

We usually s( )during the night during the summer holiday是什么时态 during the day的同义词组是什么 during the day的同义词组是什么 sleep during the day的意思是什么 during the holiday中文意思是什么? she's sleeping during the movie because she's tired During the 1990s,是什么意思?“从1990年起”?啊弥陀佛 during the during the During the summer holiday需不需要加S These Olympics were during the height of Hitler's rule. during the summer holidays.为什么要加s? During--(整个飞行途中),the speaceship's conditions are good 请问住句话错因是什么?It was during the 1990's that the friendship between Edward and Jeremy reached their highest point.请问是最高级用法错了,还是reached的用法错了? during the 1980s and 1990s 这句话中,1990s前面要不要加the?加和不加有区别吗 in the day与during the day的区别是什么 during the 1400's and 1500's,1400's 1500's怎么读啊?