Question

6. I think there is a salesman ________ the door

7. The neighbors quarrel _________ themselves quite often. 

8. Even the new drug could not cure him ____ his illness. *

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Answer 1

Answer:

6th answer

I think there is a salesman at the door

7th answer

between

8th answer

because of

Answer 2

Explanation:

1.behind

2.among

3.from