Even if his letter（） tomorrow ，it（） too late to do anything.
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。
Wecanhear（）fromthebackoftheroom.
____youwerebusy,Iwouldn’thavebotheredyouwithquestions.
Arrivingatthebusstop,_____waitingthere.
_____nocauseforalarm,theoldmanwentbacktohisroom.
Shehiredalawyertoinvestigate,onlytolearnthatGabrielhadremovedhernamefromthedeed.Theinfinitiveverbphrase“onlytolearn”isused____.
