Gap-fill exercise

Fill in all the gaps, then press "Check" to check your answers. Use the "Hint" button to get a free letter if an answer is giving you trouble. You can also click on the "[?]" button to get a clue. Note that you will lose points if you ask for hints or clues!
1.If Mr. Gates (be) at home tomorrow, I am going to visit him.
2.Joseph wasn't in the office last Monday. If he (be) at the office last Monday, I (visit) him.
3.If I (have) my camera with me yesterday, I (take) a picture of those aliens standing in front of our school.
4.If I could speak German, I (spend)next year studying in Austria.
5.Eric: Are you coming to annual reunion?
Lucia: I don't think so, but if I change my mind, I (tell) you.
6.I can't sing well, but I wish I .