来自葛伟平的问题
Wearegoingtohavethesportsmeeting________it________tomorrow．[]A．if;rainsB．unless;willrainC．unless;rainsD．when;willrain
Wearegoingtohavethesportsmeeting________it________tomorrow．
[]A．
if;rains
B．
unless;willrain
C．
unless;rains
D．
when;willrain
