中文谷Sofarthey
- 習題庫
- 關注：2.11W次
問題詳情：
So far they __________ to speak four languages. Sometimes they _________ them.
A. have learned; have mixed B. have learned; mix
C. learned; mix D. learned; mixed
【回答】
B
知識點：動詞時態
題型：選擇題
標籤：
Sofarthey
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