The modern plane is not the machine _____ it was when first invented.
— Do you like Nack? — Yes, Nack is good, kind, hard-working and intelligent; __________, I can’t speak too highly of him.
It depends on __________ he has enough money.
As there was not much chance to find good jobs in their hometown, a lot of young people tried to __________ their fortune in cities.
We have made up our minds to __________ teaching after we graduate from college.
The new student was very slow to __________ the unusual rules of the school.