Read the sentences and decide which one of the given words fits each gap in the expressions:

1. You need to log ______ before you can start using it.

• in
• out
• into
• off
• down
• on/in
• up
• on

2. You need to back ______ your important files.

• out
• in
• up
• off
• down
• on
• on/in
• into

3. I'll print ______ the relevant information.

• on/in
• up
• out
• on
• in
• into
• down
• off

4. They were able to hack ______ Microsoft's system and steal the passwords.

• in
• on/in
• into
• up
• off
• down
• on
• out