Parts of the cave have been badly affected by rain and to the air.
—What have you learned from your experience in Thailand? —Well, meeting people from another culture ______ be very difficult.
All her hard work ______ in the end, and she finally passed the exam.
—Did Hans take part in the contest? —No, at the last moment his courage _____ him and he ran away.
As many as 100 species of fish, some ____ to these waters, may have been affected by the pollution.
— Have you seen ____ pencil? I left it here this morning. —Is it _____black one? I think I saw it somewhere.