(2013·河北普通高中高三质量监测)________ I couldn't fully understand what he wanted to show in his paintings, I thought his works were quite impressive.

A．As  B．Since  C．If  D．While

(2013·北京朝阳模拟)Jim came back early last night. It was not yet eight o'clock ________ he got home.

A．before  B．that  C．when  D．until

(2013·乌鲁木齐高三第一次诊断性测验)If we work with a strong will, we can overcome any difficulty, ________ great it is.

A．what  B．how  C．however  D．whatever

(2013·乌鲁木齐高三第一次诊断性测验)Life is filled with things we have no control over, ________ ourselves, we can control.

A．for  B．and  C．so  D．but

(2013·吉林长春高中毕业班第一次调研)I'll make some sandwiches, just ________ we get hungry later.

A．even if  B．as though

C．if only D．in case

(2013·吉林长春三校高三调研)You know that some people say more but do less ________ others do the opposite.

A．once  B．while  C．when  D．as

(2013·甘肃兰州名校高三检测)The professor told me to start the research right now, ________ I was sure to fall behind.

A．or  B．so  C．but  D．and

(2013·辽宁大连双基测试)________ a man's age, he can reduce it several years by wearing a confident smile.

A．Whichever  B．Whatever

C．Whenever  D．However

(2013·河北教学质检)After a year, doctors diagnosed him with a disease so rare ________ it affects just one in 8 million children.

A．after  B．that  C．as  D．since

(2013·山东青岛2月质检)________ you need something, please don't hesitate to let me know.

A．Even though  B．In case

C．As though  D．Even if