Never _____ forget the days when _____ together with you.

Pierre Curie ______ his own research workand joined Madam Curie in the search for radium

been offered a job in a university, but shedoesn’t want to take it.—-______ It’s a very good chance.

It is said that his missing paintings were ________the possession of Russians and they were valued________$ 500,000.[ ]

当你被介绍认识某人后, 你应该说: “____”。