Am, is, are exercises - Tenses exercises

Choose the correct form of the verb 'to be'.
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I _____ the only person in the room who really knows you.
am
is
are
Which one of you _____ Banjo?
am
is
are
It _____ the responsibility of the user to obtain and use a shielded equipment interface cable with this device.
are
is
am
I _____ an old colleague of his.
is
am
are
Casper, you _____ a burglar, and a good one.
are
is
am
It _____ good practice to install the water supply tap outside the machine in an easily accessible position.
are
is
am
It _____ that endeavour, and no other, which the ETUC supports.
are
is
am
The six-digit temporary security codes will be synced between all your devices if you _____ Premium.
is
are
am
Is not it clear that I _____ the one who will take it all?
am
are
is
Furthermore, it _____ a market where few people speak English and even fewer French.
am
is
are