单选题 No sooner had they got the goods covered up ______ it started raining hard.

【正确答案】 B
【答案解析】[解析] 本题考查连词固定搭配。no sooner...than...一…就…; hardly...when...一…就…;scarcely...when...一…就…。本句的意思是:他们刚把货物盖好,就开始下雨了。