There is ()"f" and ()"d" in the word "friend"
问题描述：
There is ()"f" and ()"d" in the word "friend"
答
an；a
解释：以元音因素开头的字母要用冠词an，辅音音素开头的字母用a
答
an "f" and a "d"
答
第一个空 an 第二个空 a
因为第一空后的f是元音开头的,用an