Bộ 20 đề ôn thi Chuyên Anh năm 2023 (Đề 65)

The idea that having a good cry do you (83) _____ is a very old one and now it has scientific validity since recent research into tears has shown that they (84) _____ a natural painkiller cal

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The idea that having a good cry do you (83) _____ is a very old one and now it has scientific validity since recent research into tears has shown that they (84) _____ a natural painkiller called enkaphalin.

contain

retain

hold

keep

Giải thích

Chọn A