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......................................................................
