Memories ________on him as soon as he met the friend whom he had not heard from for over thirty years.

Twenty dollars_______ enough for the coat.

Busy as the man is, he _____ every weekend to staying with his wife and children. [ ]

required in the library regulations that any book borrowed __________ by due time, or the borrower will be fined.

.They were __________ to produce carbon,nitrogen,water and other gases