① The moment I heard the noise, I rushed to the spot.

= At the moment (when) I heard the noise, I rushed to the spot.

= (At) the moment (that) I heard the noise, I rushed to the spot.

= the moment (that) I heard the noise, I rushed to the spot.

= As soon as I heard the noise, I rushed to the spot.

② I sent you the news the instant I heard it.

= I sent you the news as soon as I heard it.

③ I knew him the minute I saw him.

= I knew him as soon as I saw him.

④ We'll be married the very moment we find a house.

= We'll be married as soon as we find a house.

⑤ Return the book immediately you've read it.

= Return the book as soon as you've read it.

⑥ Instantly he saw me he held out his hands.

= As soon as he saw me, he held out his hands.

⑦ Directly I spoke there was a dead silence.

= As soon as I spoke, there was a dead silence.

⑧ I had hardly begun to doze when I was startled by something falling near me.

= As soon as I began to doze, I was startled by something falling near me.

⑨ Scarcely had he gone to bed before he heard footsteps.

= As soon as he went to bed, he heard footsteps.

⑩ No sooner had he put down the receiver with a great sigh of relief than the telephone rang again.

= He had no sooner put down the receiver with a great sigh of relief than the telephone rang again.

=As soon as he put down the receiver with a great sigh of relief, the telephone rang again.

⑪ Hardly had he arrived when he started complaining.

= As soon as he arrived, he started complaining.

⑫ No sooner had we sat down than we found it was time to go.

= As soon as we sat down, we found it was time to go.