题目内容：
A in
B about
C for
D to
参考答案：
答案解析：
单选题：A in B aboutC for D to
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A in
B about
C for
D to
A in
B about
C for
D to
According to the passage， policemen spend most of their time
According to the passage， policemen spend most of their time and efforts _______
简述3～4岁儿童心理发展的主要特征。
简述3～4岁儿童心理发展的主要特征。
Crystal expresses the belief that in the future __________ w
Crystal expresses the belief that in the future __________ will not happen to En
An old friend called on me the day before yesterday．
An old friend called on me the day before yesterday．A．telephoned B．rang C．visite
The consumers' first motivation in buying personal computer
The consumers' first motivation in buying personal computer is to __________．