I am sorry you’ve been waiting so long, but it will still be some time __________ Brain gets back．
| A．since | B．before | C．till | D．after |
相关试题
Twenty students want to attend the class that aims to teachto read first.
| A． | what | B． | who | C． | how | D． | why |
What are you doing out of bed, Tom? You're to be asleep. ,
| A．supposed | B．known | C．thought | D．considered |
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