(2024) Đề minh họa tham khảo BGD môn Tiếng Anh có đáp án (Đề 15)

There is, (18) _____, some controversy over whether they actually weaken our immune systems

18/50

These include vaccinations given routinely to children which have revolutionized our lives by providing immunity to some life-threatening diseases. There is, (18) _____, some controversy over whether they actually weaken our immune systems

which

who

where

whom

Giải thích

Giải thích: Mệnh đề quan hệ.

Chọn A