ONCE AN OFFENDING ALLERGEN HAS BEEN IDENTIFIED ... TESTS, IT IS P...

116. - 150 Câu ngữ pháp ôn thi THPT Quốc Gia 2021 môn Anh có đáp án
Tiếng Anh 150 Câu ngữ pháp ôn thi THPT Quốc Gia 2021 môn Anh có đáp án

116. Once an offending allergen has been identified ... tests, it is possible for the doctor to

give specific desensitizing injections.

a. means of

b. by means of

c. of the means by

d. by means