4 Uzupełnij zdania, stosując wyrazy podane w nawiasach w odpowiedniej formie.
1 I .......(not use / make) back-ups, but I do now.

2 While Jack and i.......... (install) some new anti-virus software on my laptop last night, it got really hot and turned itself off.

3 Mel...........(show) us her new smartphone when the bus finally arrived.

4. ....,........... (your parents / use / listen) to vinyl records when they were our age?

5 Were you typing anything important the screen ........... (go) black?​