填空A____of lettuce is cheap ,but a bowl of salad costs an ___and a ___in this restaurant

问题描述:

填空A____of lettuce is cheap ,but a bowl of salad costs an ___and a ___in this restaurant
给出供选的词语head leg arm

head
arm
leg
一头莴苣很便宜,但是一碗沙拉很贵.
an arm and a leg 形容很贵