Evenifhisletter____tomorrow，it____toolatetodoanything.
A、willarrive,,isC
「句意」 即使他的信明天到也无济于事了。
「难点」 在条件句中表示现在将来的时间，需要用一般现在时，主句中使用将来时。
This missile is designed so that once _____ nothing can be done to retrieve it.
U.S. News ____________ rankings of colleges since 1983. They are a very popular resource for students looking to apply to university campus.
It is imperative that students _____ their term papers on time.
Our（）sensitivitydecreaseswithage.Byage60，mostpeoplehavelost40percentoftheirabilitytosmelland50percentoftheirtastebuds.
If a substance is dissolved in water or heated ， it may （）a gas.
