1 is

2 are

3 am

4 yes

5 to be

1 to have

2 there is

3 there are

4 to exist

5 to be

1 haven't

2 hasn't

3 doesn't exist

4 to not have

5 to not be

1 but

2 however

1 plain

2 informal

3 suitable

4 convenient

5 opportune

6 to urinate or defecate

7 equivalent to 就[jiù]: then

8 in that case

9 even if

10 soon afterwards

1 lit. one is one, two is two (idiom)

2 fig. things are (or ought to be) perfectly clear-cut

3 unequivocal

1 not having anything at all (idiom); utterly lacking

2 without two sticks to rub together

1 devoid of fear (idiom)

2 intrepid

1 lit. if three walk together, one can be my teacher (idiom, from the Analects of Confucius)

2 you have sth to learn from everyone

1 the blessing of three lifetimes (idiom)

2 (courteous language) it's my good fortune...