Complete the following sentences, beginning with an -ing form used in the way shown in brackets.

1. (-ing clause giving the reason for an action)

Not.............before, I was a bit nervous.

2. (-ing clause describing a background situation for another action)

.................................I noticed how quiet it was.

3. (-ing clause giving more information about a verb, like an adverb)

I walked along the street,....................................................................

4. (-ing clause giving more information about a verb, like an adverb)

I went into the room, not......................................................................