Has Tom finished his job yet —Ihave no idea of it; he _____ it this morning

－ ________ does the bridge made of steel weigh －About 90,000 tons.

Many of them turned a deaf ear to his advice, _______ they knew it to be valuable

Why did you leave without a word of warning to John—But what _____ otherwise He never listens to me

nd, foreign fishing ships will have to request permission from ports that are able to _____ them.