It is usually warm in my hometown in March, but it _____ be rather cold sometime.
A．mustB．canC．shouldD．would
Ｂ
考察情態(tài)動詞用法。A一定，必定；B可能；C應(yīng)該；D會；結(jié)合句意可知是表示存在某種可能性，故can正確。句意：通常在我的故鄉(xiāng)三月份是很溫暖的，但是有時候也有可能相當冷。
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