1 . This year, ________ was hard to tell whether my prize or the one chosen by my 14-year-old brother, Jason, was the winner. (用适当的词填空)

2 . __________is common knowledge that a thorough declutter (清理) is the best way to instantly refresh your home. (用适当的词填空)

3 . However, I find it disappointing _________our personal, private moments with music are increasingly being turned into information points and offered to advertisers. (用适当的词填空)

4 . ______ took the author four years to finish his last novel, which came to the top of the best-seller list once published. (用适当的词填空)

5 . To the users, ___________ seems as if the camera is actually a part of their application.(用适当的词填空)

6 . ________ seems obvious that only in this way can we fight against the virus successfully.(用适当的词填空)

7 . You could not take back a book to the library on the same day you’d taken it out; ________ made no difference to her that you’d read every word in it and needed another to start.

8 . The organizer has opened several channels (渠道) to sell tickets, which makes________ easier and quicker to buy or book tickets. (用适当的词填空)

9 . If Tononi’s theory is right, it would explain why, when we miss a night’s sleep, we find it harder the next day ________(concentrate) and learn new information. （所给词的适当形式填空）

10 . This makes ________ necessary for them to get a job as soon as possible, otherwise a number of serious issues may arise. （用适当的词填空）