Fill in the gaps with the correct form to complete the sentences.

1)The dog ... to get attention whenever he wanted something.

2)They ran very fast over the rocky hill and tried not to ... and fall.

3)The dog would ... when he got angry to warn people away.

4) When the man stopped running, he was ... from exhaustion.

5) When the two strangers were introduced, they ... hands politely.

6) The woman saw a shadow and suddenly ... with fear.