题目内容：

求几道英语选择题答案,要详细解释
1.Mary is always——under the weather.
A.traveling B.away from home C.sick D.unconscious
2.At last she left her house and got to the airport, only ________ the plane flying away.
A) having seen
B) to have seen
C) saw
D) to see
3.They assured us that _______ was waiting for they were there to share it
A) what B) whatever C) it D) whoever

优质解答

1.C(under the weather的意思是身体不舒服,心情不好.句子的意思就是Mary在心情不好的时候总是生病)
2.A（完成时强调结果,现在分词表主动）
3.D（ _______ was waiting for是一个从句,后面的they和这个从句没关系.空是指一个人【因为人在waiting for】.翻译过来就是：他们向我们保证：无论是谁在等,他们都在那去分享）