Choose the correct form: 1. (Is / Are) your new jeans dark or light? 2. I like (this / these) green socks. Can I buy (it / them)? 3. Your clothes (is / are) always nice. Who buys (it / them)?

Solution:

1. Are your new jeans dark or light? (Jeans is a plural noun, so we use 'are').
2. I like these green socks. Can I buy them? ('this/these' refers to the socks, which are plural, so we use 'these'. 'it/them' refers to the socks, which are plural, so we use 'them').
3. Your clothes are always nice. Who buys them? ('is/are' refers to clothes, which is a plural noun, so we use 'are'. 'it/them' refers to clothes, which are plural, so we use 'them').

Answer: 1. Are, 2. these, them, 3. are, them.