1 My mother,together with her students,________in Shanghai at that time.A:is B:wasC:are D:were2 We are here to provide the public________good serviceA:for B:withC:in D:of3 ________of this term,students have made lots of new friendsA:By the end B:In the endC:At the end D:To the end选什么不重要，
1 My mother,together with her students,________in Shanghai at that time.
A:is B:was
C:are D:were
2 We are here to provide the public________good service
A:for B:with
C:in D:of
3 ________of this term,students have made lots of new friends
A:By the end B:In the end
C:At the end D:To the end
选什么不重要，
1 B 2C 3A
第一题选D，at that time是过去时所以就排除A、C 而前面说是together说明不是一个人所以选：D
第二题选B，provide sb. with sth. 这是个短语
第三题选A，这是个站在过去的角度说过去怎么怎么样，所以，by the end（也可以用by the time）........，sb. done（过去分词）
1.D
2.B
3.A
1.was 因为“真主”是my mother
2.with
provide somebody with something
3.by the end of
题干有误，应为will have made
第一题B,together with是个插入语,在有插入语的情况下,句子的主语是插入语前面的东西,前面是单数就是单数,是复数就是复数,和插入语无关,于是my mother was in shanghai at that time
第二题B,provide (somebody/something) with **的意思是提供给某人/某物什么东西**
第三题A,意思是在这学期末,学生们应该已经交了很多朋友了,后半句的时态是线索.by the end of是到什么什么时候为止