()We checked all the luggage before __________ the plane.
问题描述：
()We checked all the luggage before __________ the plane.
A.aboarding B.boarding C.we boarding D.we went board
()Whenever we meet each other,we always have a lot ________each other.
A.to tell B.to speak C.to talk D.to say
()Carrier's _______ in science led her ________ a scientist.
A.interested;become B.interesting;to becoming C.interest;to become D.interesting;to become
答
A before doingsth 前后主语一样
A只有tell可以直接接谓语
Cled是谓语前面的interest兴趣是主语