信息技术对教育的影响是巨大的．尤其是第三次信息技术革命，它的标志是（）

The golden rule is not to waste time waiting foropportunity. Begin, ______ opportunity will find you.

She brought with her three friends，none of ________ I had ever met before.

Such women _____ know Tom thought he was charming

What do you think of summer in Nanjing—Well, it’s sometimes ______ hot and sometimes thereis ______ rain.