Students wearing face masks participate in a college entrance exam in Rabat, Morocco, on June 8, 2021. (Photo by Chadi/Xinhua)
Students wearing face masks participate in a college entrance exam in Rabat, Morocco, on June 8, 2021. (Photo by Chadi/Xinhua)
A student wearing a face mask participates in a college entrance exam in Rabat, Morocco, on June 8, 2021. (Photo by Chadi/Xinhua)
Students wearing face masks participate in a college entrance exam in Rabat, Morocco, on June 8, 2021. (Photo by Chadi/Xinhua)