The boy complained _______ a pain in his stomach.
D
complainof：抱怨，说自己有病。句意：这孩子说他肚子痛。
Theboycomplained_______apaininhisstomach.
Charles Smith, ______ was my former teacher, retired last year.
Theyareeager_______abroad.
Heblamedhispoorperformance_____jetlag.
Themeeting_____nextweekwillbeofgreatimportance.