the students must be

The students must be careful at the c--------------- The old peopleshould be crefully to c--------
the road.根据句意及首字母提示补全单词.

第1个回答  2020-04-01
The students must be careful at the crossing.
学生们必须在十字路口处小心.(at+地点,地点是名词,crossing是人行横道,十字路口)
The old people should be carefully to cross the road.
老人们必须小心地过马路.(to+动词构成不定式)
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