1. Everyone likes the stranger, but in ______(实际) he is a criminal.
2. Members will be admitted on______(出示)of a membership card.
3. The young miner was ______(自信的) of winning the girl’s heart.
4. The dam _____ (使安全) the city from the flood.
5. The major could be a subject like _____ (生物学), math or a foreign language.