Complete the sentences with the correct forms of the verbs. 1.if i clean the house,my parents will give me some extra money .2.) mike if (not arrive) before 10 o'clock. 3. if ) very fast, they (not understand) you.4. if ) ) him i'm at sabrina's house? .5.your know) if tell) them.

2. I will phone Mike if he doesn't arrive before 10 o'clock.
3. If you speak very fast, they will not understand you.
4. If Marco phones tonight, will you tell him I'm at sabrina's house?
5.Your parents will not know if you do not tell them.