THE OZONE LAYER HELPS _______ US FROM THE SUN'S RAYS. A. PROTECT...

46. - File thứ 5: de_va_dap_an_45_phut_so_3_lop_11_sach_moi_311201817
File thứ 5: de_va_dap_an_45_phut_so_3_lop_11_sach_moi_311201817

46. The ozone layer helps _______ us from the sun's rays.

A. protect B. reduce C. release D. change

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