Donald is still , but it's a matter of time when he will become an experienced worker in the shipping company one day.
Awet behind the ears正確答案
Bgreen with envy
Cpaying an arm and a leg
Dtouching his heart
答案與詳解
wet behind the ears 字面是『耳朵後還濕濕的』,比喻像剛出生的小動物,引申為『沒經驗、菜鳥』,正好對比 experienced worker。
