Evenifhisletter____tomorrow，it____toolatetodoanything.
C
「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。
Heleftordersthatnothing_____toucheduntilthepolicearrivedthere.
Iwastohavemadeaspeechif_____.
Our（）sensitivitydecreaseswithage.Byage60，mostpeoplehavelost40percentoftheirabilitytosmelland50percentoftheirtastebuds.
Marytiptoedoverandtooktheclockawaybecauseshehatedtohearit___whenshewastryingtogotosleep.