题目内容
He ________ to swim when he was five.| A．can | B．could | C．can be able | D．was able |
D解析:
略
略
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He ________ to swim when he was five.
| A．can | B．could | C．can be able | D．was able |
题目内容
He ________ to swim when he was five.| A．can | B．could | C．can be able | D．was able |
He ________ to swim when he was five.
| A．can | B．could | C．can be able | D．was able |