When ________ for his views about his teaching job, Philip said he found it very interesting and rewarding.
The problem is so complex that I'm afraid it will take me several hours to________.
The newlylearnt words will be impressed on us only if they are ________used in everyday communication.
The car's________ has improved a lot since a new engine has been applied to it.
How________ you expect to get something in return when you never willingly lend a hand to others?
--- Alice is moving to her new apartment next Saturday. --- I would be glad to help her,________ need some help.