几道高二英语基础题要四个选项的解释!【可忽略下列问题的序号,系统自带的】

几道高二英语基础题要四个选项的解释!【可忽略下列问题的序号,系统自带的】
With three campuses---- a unified school,the school is embracing the best time in her history
A.consisting of Bmade up of C.making up D.consisted of
----What shal we do after the exam? ----- --------
A.Help yourself B.It is a deal C.Up to you D.More or less
The festival atmosphere of Christmas _________ his homesickness.
A. set up B. set out C. set off D. set about
-- You see, the ground is wet. It must have rained last night. --Not really. Actually it_______.
A. didn’tB. mustn’tC. hadn’tD. wasn’t
To satisfy our own c---- [以c开头],we decided to get a solution to the problem by ourselves.
几道高二英语基础题要四个选项的解释！