Please check the grammar

[Roselin]

Are the following sentences correct?
a) How are your friends ?
b) How are your parents?
c) How is your parent?
d) Paste the wool on the picture given. ( In this sentence, it should be on or in. There is a picture drawn by a teacher to the students and she is asking them to paste a wool ON it or IN it. Please help me. I am confused.)

[xpert]

Are the following sentences correct?
a) How are your friends ?
b) How are your parents?
c) How is your parent?
d) Paste the wool on the picture given. ( In this sentence, it should be on or in. There is a picture drawn by a teacher to the students and she is asking them to paste a wool ON it or IN it. Please help me. I am confused.)

Yes, they -a,b,c - are correct.
d) paste on sounds better to