The high temperatures created by fire are necessary for to split open the

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Mark the letter A, B, C, or D on your answer sheet to indicate the underlined part that needs correction in each of the following questions.

The high temperatures createdby fire are necessary for to split open theseed-bearing cones of lodge pole pines.

seed-bearing

created

are

for to split open

Giải thích

Chọn D

D. for to split open -> to split open

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