A: Hi. _______ your sister at home? B: No, she _______. She _______ here this morning, but now she _______ at work.
Is, isn't, was, is
James _______ born in England, but his parents _______ born in Singapore.
was & were
Today _______ Tuesday, so yesterday _______ Monday.
is & was
My boss _______ angry today because I _______ very late for work yesterday, and this morning too.
is & was
My books _______ here on my desk this morning. Where _______ they now?
were & are