J’ai besoin d’aide s’il vous plait

Bonjour
a- The second shirt is darker than the first one.
b- The red dress is tighter than the pink one.
c- The beige trousers are cheaper than the blue ones.
("trousers" est pluriel)
d- The first dress is more old-fashioned than the second one.
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bonne fin de journée ☺☺☺