Question

The boy over there is the only one of the students who ________ to Europe．

1. A.
   has been
2. B.
   have been
3. C.
   has gone
4. D.
   have gone

Answer 1

A
思路解析：over there說明the boy就在眼前，因此排除C、D兩項(xiàng)；先行詞是the only one of the students，是一個(gè)人，因此答案是A項(xiàng)。
綠色通道：要熟記各種學(xué)過的詞匯、句型�？梢院�(jiǎn)單地記為：“one of the+可數(shù)名詞復(fù)數(shù)”作先行詞時(shí)，定語從句謂語動(dòng)詞用復(fù)數(shù)；“the only one of +可數(shù)名詞復(fù)數(shù)”作先行詞時(shí)，定語從句謂語動(dòng)詞用單數(shù)。