The boys are still playing basketball happily on the court _________ it is raining heavily．
A.in caseB.even thoughC.as ifD.as long as在线课程B
考查连词辨析。in case以免，even though即使，as if好像，as long as只要，句意：这个小男孩仍然在高兴地在球场上打篮球即使雨下得很大。故选B。