1.with his attention ( ) on the job ,he did noteven look up when we came in
A focused B focusing C to focus D having focused
“注意”是被集中到工作上,所以要用过去时
2.The lady ( ) thirty poor students go to college by the end of last year.
A helped B had helped C has helped Dwould have helped
帮助这个动作在一个过去的时间 the end of last year已经发生完了,所以是过去完成而不是现在完成
3.( )all of the questions have been settled ,you can go on with your work
A only if (除非..才) B even though (即使) C now that (既然,由于) D what if(倘使...将会怎样;即使...又有什么要紧)
选C翻译成“既然你的问题已经解决了,你可以继续工作了”,选A的话CAN要改为could,因为only if 引导了条件状语从句后面要用虚拟语气.