hey knew there was a panda in thezoo, the children could ___ wait to see it

Whatever happens to you, you should be ______ about the future life.

of the newspapers often have the same news, so ______ I read first will ruin the other.

He started to work dilligently _____ he came up with the idea of hybrid rice for the first time in the 1960’s

My father gave up smoking at last.