The batteries .......... in a different factory. (not produce)
are not produced
The sockets .......... by our department. (test)
are tested
The remote control .......... separately (sell)
is sold
Where .......... the cables .......... in? (plug)
are plugged
How .......... this tube ..........? (produce)
is produced
What kind of keyboard ........... in China? (use)
is used
.......... the sockets ..........? (add)
Are added
When ........... the battery ..........? (attach)
is attached
Where ........... this engine ..........? (build)
is built
