1
I love eating veggies.
Point to yourself for 'I', cross your arms over your chest for 'love', sign 'eat' by tapping an 'O' handshape to your mouth, and finish with the 'veggie' sign on your cheek.
2
Do you want veggies with dinner?
Raise your eyebrows to indicate a yes/no question. Sign 'you', 'want', 'veggies', 'with', and then 'dinner' (often signed by combining 'eat' and 'night').
3
My favorite veggie is broccoli.
Sign 'my', tap your middle finger to your chin for 'favorite', sign 'veggie', and then fingerspell B-R-O-C-C-O-L-I or use the sign for broccoli if you know it.