Complete the sentences with the correct words using the right forms. The first two or three letters of each word are given.

Write the missing letters in each gap.

There's a technical problem with the cha[ ] in the personal digital assistant. Can you repair it?

If you have a rec[ ] for your purchase, we can give you a full refund.

The screen on my laptop has a few cr[ ]. I think it's a defect from the manufacturer.

When I opened the box with my voice recorder, I found that the instruction was mi[ ]. How can I get it if it's not there?