Question

Mary is the only one of the teachers who ________ a little Chinese because she is one of my friends who ________ been to China.

A．know；have	B．knows；has
C．knows；have	D．know；has

Answer 1

C

C
解析　此句包含了兩個(gè)定語(yǔ)從句，關(guān)系代詞都在從句中作主語(yǔ)。關(guān)系代詞的單復(fù)數(shù)應(yīng)與定語(yǔ)從句的先行詞的單復(fù)數(shù)保持一致。第一個(gè)從句的先行詞是the only one of the teachers，指唯一的老師，從句謂
語(yǔ)動(dòng)詞應(yīng)用單數(shù)形式。第二個(gè)定語(yǔ)從句先行詞是my friends，表示的是復(fù)數(shù)概念，所以從句謂語(yǔ)用復(fù)數(shù)，因此答案為C項(xiàng)。