Sometimes children have trouble ________ fact from fiction and may believe that such things actually exist. A) to separate B) separating C) for separating D) of separating为什么选B？请详细解释。
热心网友
have trouble/problem/difficulty (in) doing something
Sometimes children have trouble ________ fact from fiction and may believe that such things actually exist. A) to separate B) separating C) for separating D) of separating为什么选B？请详细解释。
have trouble/problem/difficulty (in) doing something