The traffic law has _______. It won’t be long before it is put into effect.

I _________ the boy to work hard at his lessons, but he wouldn’t listen.

The suitcase     twenty pounds and    two meters long one meter wide.

My father walked _____ in the room, looking as if he was thinking over something.

Though he failed in the experiment again and again, he didn’t______, and at last, he made it.