You will have to face some practical problems when you start . . . . . . . this plan.

Ravi's behaviour is worthy of . . . . . . by all the youngsters.

Man must . . . . . . . now to stop pollution.

Waking at three o'clock, I heard the . . . . . . . of thunder.

He is so . . . . . . . . that everyone is always . . . . . . . . to help him in his work.

We must explore . . . . . . . . sources of energy as our supply of fossil fuel has been . . . . . . . .

Successful people are genuinely very efficient in . . . . . . . . their tasks.

The accused . . . . . . that he had met the deceased before.

Even a . . . . . . . glance will reveal the mystery.