—Are you ready for Spain?
—Yes，I want the girls to experience that________they are young.
| A．while | B．until |
| C．if | D．before |
（届安徽省合肥市高三第二次模拟考试英语试卷）
How can you expect to get ahead in your life ______ you even live to yourself from time to time?
| A．though | B．until | C．before | D．when |
（届北京石景山区高考一模英语试卷）
I’m sorry you’ve been waiting so long,but it’ll still be some time_____Tom gets back.
| A．when | B．before | C．after | D．since |
（届四川省成都树德中学高三3月阶段性考试英语试卷）
Most volunteers are from universities, _________ it is not uncommon to see middle and primary school students too.
| A．though | B．however | C．since | D．even if |
（2014届陕西省五校联盟高三第二次模拟考试英语试卷）
If you had seen a doctor, you much better now.
| A．are | B．will be | C．would be | D．would have been |
（届湖南省长沙市重点中学高三第七次月考英语试卷）
Don’t worry! All the problems will be settled ________ we join hands.
| A．only if | B．if only | C．what if | D．even if |