Notice: “Visitors must surrender their passes when leaving.” What must visitors do?
กKeep their passes after departure.
ขExchange their passes before entering.
คShow their passes again at departure.
งReturn their passes at departure.
เฉลยอธิบาย
Surrender means hand back or give up. The other options each alter or violate a specific part of that meaning or rule. The other options each alter or violate a specific part of that meaning or rule.