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. Your supervisor is the person who is to be contacted when you have problems.
   
2. The instrument which is used to measure the water depth is very simple to use.
   
3. We have not yet found the method which we can use to open this time capsule.
   
4. He tried very hard to find the car which could reduce his fuel cost to minimum.
   
5. The statistics that was employed to calculate the data was used by
    many researchers in this area.