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My mother is very angry because some paint __________ on the carpet in the living room
A: has been spilt
B: was spilling
C: will spill
D: has been spilled
The functions of the new computer programme __________ to the employers by a technician last week.
A: were explained
B: will be explained
C: explained
D: are explained
We __________ the first birthday of our little brother next week, and the invitations __________ out to all of our family and friends yesterday.
A: are going to celebrate / have been sent
B: are celebrating / were send
C: are celebrated / are sending
D: are celebrating / were sent
The Internet __________ by Sir Tim Berners-Lee in 1989, and since then, it __________ by people all around the world.
A: was invented / has been used
B: will be invented / must use
C: was invented / has been uset
D: was inventing / will be used
Before its movie __________, the final book of the Harry Potter book series __________.
A: was released / was published
B: releases / will be published
C: release / had been published
D: has been released / is published
Coffee, which __________ heavily all around the world now, __________ to America by the British in the mid-1600s.
A: is consuming / was introduced
B: is consumed / was introduced
C: is consuming / had been introduced
D: consumes / introduced