F: Sorry, Sir. Our facilities are under regular maintenance right now. And can't provide service.
(A) M: Why isn't there any gas left at the gas station right now? (B) M: Although the quality of the gas is terrible, it's fortunate that you can still provide service. (C) M: I didn’t hear you. Please could you tell me again? (D) M: Why do you choose to check and repair the equipment now?
D