情态动词can/could表能力 — 英语选择题

Milo is a rescue dog. When he was a puppy, he ___ carry only a small bag. Now he…

At age two, a young elephant was able to lift a small log. Which sentence has th…

根据中文提示补全单词：The young guide dog c____ open the gate by itse…

根据句意，用 can 或 could 填空。A rescue horse ___ carry a first-aid b…

根据中文提示补全单词：表示过去有能力的情态动词 c__ld（�…

根据句意和中文提示补全单词：Last year, the parrot c____ say its ke…