He finds it hard to keep _____ with the change of society if he stops learning.
Almost all English prepositions ______ look like verbs.
______ the growing number of patients, the clinic had to extend its service from five days to seven days a week.
It remains ______ whether she’ll be fit enough to play in the finals.
Dad had to cycle to work this morning because his car _______ at the garage.
John passed the examination though he had only spent _______ on the subject as others had done.