【单选题】We make sure we’re always well stocked up with candles, just ________.
【单选题】光纤是一种能够传输光频电磁波的介质波导,其结构上由( )组成
【单选题】We are all proud of the great changes in Beijing. We're sure Beijing will be even ________ tomorrow. [ ]
【单选题】光纤是一种能够传输光频电磁波的介质波导,其结构上由( )组成
【单选题】We‘re not sure if it ________ tomorrow. If it ________, we won't climb the South Hill. [ ]
【单选题】It's quite a time _____ Liu Xiang was injured in the foot, but we're sure it won't be long _____ he returns to the track. [ ]
【单选题】We’re sure to win the entrance examination ___________ next year.