用括号里动词的现在进行时态来填充空格。
B. Fill in the blanks with the present continuous tense of the verbs in brackets.
用括号里动词的现在进行时形式完成电话会话。
Complete the telephone conversation using the present progressive form of the verbs in brackets.
用括号中所给的动词的现在进行时完成句子，必要时变化词序。
Complete these sentences with the present continuous form of the verbs given in the brackets, changing the word order where necessary.
用括号中所给的动词的现在进行时完成句子，必要时变化词型。
Complete these sentences with the present continuous form of the verbs given in the brackets, changing the word form where necessary.
用括号中所给的动词的现在进行时完成句子，必要时变化词型。
Complete these sentences with the present continuous form of the verbs given in the brackets, changing the word form where necessary.
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