未知题型 ._______ evidence that languageacquiring ability must be stimulated. A) If being B) It is C) There is D) There being

未知题型 We agreed to accept ______ they thought was the best tourist guide. A) whatever B) whomever C) whichever D) whoever

未知题型 We take our skin for granted until it is burned ______ repair. A) beyond B) for C) without D) under