Shehiredalawyertoinvestigate,onlytolearnthatGabrielhadremovedhernamefromthedeed.Theinfinitiveverbphrase“onlytolearn”isused____.

Of course，（）most immigrants did not get rich overnight ， but the of them were eventually able to improve upon their former standard of living.

Frankalmostneverreceivedanyeducation,____?

Ifnot_____withtherespecthefeelsduetohim,Jackgetsveryill-temperedandgrumblesallthetime.

_____ time, he’ll make a first-class tennis player.