MARK THE LETTER A, B, C, OR D TO SHOW THE UNDERLINED PART THAT NEEDS...

Tiếng Anh DE THI THU DAI HOC MON TIENG ANH VA DAP AN

Câu 66: Mark the letter A, B, C, or D to show the underlined part that needs correcting

By studying the fossils of pollen, which extremely resistant to decay, researchers can gain useful

information about the vegetation of the past.

A. vegetation

B. which

C. By studying

D. can gain