作业帮He was able to return .This means he ( )a could if he wanted to b might c could have d did
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He was able to return .This means he ( )a could if he wanted to b might c could have d did
He was able to return .This means he ( )a could if he wanted to b might c could have d did
He was able to return .This means he ( )a could if he wanted to b might c could have d did
选A
be able to 的意思就是能够.,有能力 .
和A的意思相符