Complete the sentences with the given words intheir proper forms（用括号中所给单词的恰当形式完成下列句子。每空格限填一词）（共8分）
Don’t be afraid of making __________. They help you learn. (mistake)
The medicine should be taken_______a day after meals, George. (two)
I plan to enter for a summer camp with a friend of_______. (me)
I am not satisfied with the service here. I want to speak to the_______. (manage)
The boy moved__________  into the hall as the concert had already begun. (quiet)
The soldier saved the boy from the flood with a piece of ___________. (wooden)
Shops are not allowed to __________cigarettes to anyone under the age of 18.(sale)
Many people enjoy reading e-books, but I__________ it as it’s bad for the eyes. (like)