单项选择题 We have many holidays from the end of March till the beginning of April. They are the best days for ______ .

单项选择题 You must try your best to ______ to the new environment.

单项选择题 Veteran track trainer Johnson is scathing in his ______ of the leaders of the I. O. C. , "These people are megalomaniacs. They are power-hungry administrators. "