ThenumberofprivatecarsinChina

問題詳情：

The number of private cars in China __________ since 2005, but only 15 percent of them __________ made in China.

   A. has been increasing; are                 B. have increased; is

   C. has been increased; is                   D. had increased; are

【回答】

A

知識點：動詞時態與語態

題型：選擇題