问题
Customs and traditions are __________ to deal with, especially when they have been formed.
A:hardworking
B:steep
C:harmful
D:tough;
B:steep
C:harmful
D:tough;
正确答案是：
同类题型
My grandfather ___to be quite afraid to live in the city, but now he has __ to the life here
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The number of people invited ____fifty, but a number of them _____absent for different reasons.