【答】 本題考查動詞suggest的用法：suggest作“建議；提議”解時,其后引導(dǎo)的賓語從句中謂語動詞要用虛擬語氣,即“should + 動詞原形”,should可省略.例如：
I suggest he do it at once.我建議他馬上做此事.
I suggested that he (should) join in the club activities.我建議他參加該俱樂部的活動.
但當(dāng)suggest不作“建議；提議”解,而表示“暗示；表明；使人想到”之意時,suggest后引導(dǎo)的賓語從句中謂語動詞時態(tài)應(yīng)根據(jù)具體情況來定.例如：
Her appearance suggests that she is living a happy life.她顯得生活很幸福.
The shape of the envelope suggested that the letter might be from a lady.這信封的式樣讓人想到這信可能是一位婦人寫的.
所問問題中的suggest作“暗示；表明”解,故正確答案為C.句意為：他臉上的笑容表明他很高興為國捐軀.