How many more decades will have to pass ____ scientists succeed in providing a cure for cancer?
A．whenB．sinceC．beforeD．until
練習(xí)冊系列答案
相關(guān)習(xí)題

科目：高中英語 來源：不詳 題型：單選題


Maria has to baby-sit. That’s______ she can't come with us.
A．whyB．hoC．whenD．what

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題


She had just finished her homework ______ her mother asked her to practise playing the piano yesterday.
A．whenB．whileC．a(chǎn)fterD．since

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題


_____ the football game will be held on time largely depends on the weather.
A．IfB．ThatC．WhetherD．When

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題


I’m sorry you’ve been waiting so long, but it’ll still be some time ___ Brian gets back.
A．beforeB．sinceC．whenD．a(chǎn)fter

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題


---Couldn't you leave a message for him?
---Yes,but I need something ______I can write a note.
A．which B．that C．when D．where

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題


14. Be quiet, kids. You’ll have to wait ______ your names are called.
A．whileB．untilC．a(chǎn)ndD．unless

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題


It' s quite a time    Yao Ming got injured, but it won' t be long  he returns to________the court.
A．since； beforeB．a(chǎn)fter; whenC．before； sinceD．that; when

查看答案和解析>>

科目：高中英語 來源：不詳 題型：單選題


He made a promise____he would achieve the success that his parents were looking forward to.
A．whatB．when C．thatD．which

查看答案和解析>>

同步練習(xí)冊答案