問題補(bǔ)充：
單選題
In the past few months, a discussion ________about whether selecting “Three Goods” Students in elementary and middle schools should be cancelled.A.has to be heldB.has been heldC.has been holdingD.was held
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熱心網(wǎng)友 1樓
B解析這題考查時(shí)態(tài)語態(tài)，時(shí)間是：In the past few months,所以用現(xiàn)在完成時(shí)，而且討論是被進(jìn)行，所以用現(xiàn)在完成時(shí)的被動(dòng)式。選B。
