【題目】Eye doctors recommend that a child's first eye exam____ at the age of six months old.
A.was
B.be
C.were
D.is

【答案】B
【解析】句意:眼科醫(yī)生建議孩子應(yīng)在六個月大時進行第一次眼睛檢查。recommend表建議主張后接從句要用should do(should可省)的虛擬語氣。故選B。

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