11.How much per gallon is this _______?
12.I couldn’t hear the program because there was too much _______.
13.Thanks for the advice, but this is something I have to _______ out myself.
14.Mary was seriously injured in a _______.
15.This 80-200mm zoom lens bears canon’s L designation, denoting a top-of-the-line lens built to extremely high _______.
16.According to Mr. Green, this is a _______ problem.
17.I’m going to call a _______ to repair my car this afternoon.
18.They have already _______ the telephone in their new home
19.The roof has _______ in it, and the front steps need to be fixed.
20.He received four years of training in English and two years in English teaching.He is a _______ English instructor.
11.D 12.D 13.C 14.A 15.A
16.B 17.A 18.C 19.D 20.D