TheaverageincomeoftheChangzhou,thoughstillwellbelowtha...

問題詳情：

 The average income of the Changzhou, though still well below that of Suzhou, has been on the increase and is three times ________ it was in ㊣2001

A. that  B. which  C. what  D. how

【回答】

C

知識點：連詞

題型：選擇題