完成句子。
1 ．我们主动帮助他,但他拒绝了.(offer)
       We________help him,but he_______ ．
2 ．作为一名学生,我们必须集中精力学习.(concentrate on)
       As a student,we must________.
3 ．他被控告没有赡养他的老母亲.(accuse)
       He was____ _____ _____ ______ _____his elderly mother.
4 ．一本好书将对孩子的成长起到非常大的影响.(have influence on)
       A good book________child's growth.
5 ．他教学经验丰富,深受学生欢迎.(experience)
       He is________teaching____he is very popular among the students.
6 ．全家人都指望他养活家庭.(support)
       The whole family depend on him to________.
7 ．为了不使父母失望,我决定毕业后成为一名医生.(so as not to)
       l decide to be a doctor after graduation_______disappoint my parents.
8 ．他建议我们认真调查这个案件.(look into)
       He suggests__________with great care.
9 ．将要派谁去解这个数学难题?(arrange for)
       Who will be________solve the maths problem?
10 ．如果考上大学,父母答应给我买台电脑.( admit,promise)
         If I am_____,my parents________buy me a computer.