Choose the right form of the verb or non - finite forms of the verb (the infinitive the geround)
1.He(go) to the library three times a week
2. Victor (just/go) to see his friend . He will be back in four hours.
3.I (clean) the room since morning. I cant stop.
4.Don t forget (lock) the door . If you can t (do) it ring me up.
5. Look ! somebody (run) . Lets wait a little.