51.

1. account
2. reflection
3. verification
4. misconception

52.

1. transition
2. exchange
3. immigration
4. selection

53.

1. for
2. through
3. after
4. about

54.

1. frightened
2. confused
3. uneasy
4. happy

55.

1. representative of
2. different from
3. peculiar to
4. similar to

56.

1. intoxicated
2. depressed
3. amazed
4. thrilled

57.

1. lonely
2. alone
3. lone
4. only

58.

1. make friends with
2. make transactions with
3. hold hostility to
4. shut the door to

59.

1. hardly
2. more
3. very
4. less

60.

1. live with
2. do without
3. hold up with
4. make a success of

(Reference keys.)