1 I've never seen ______a wonderful film before.A so B very C such

问题描述:

1 I've never seen ______a wonderful film before.A so B very C such
2 My aunt will visit Beijing_______three weeks.
A after B in C on
3 We'll go on a picnic if the weather _______fine.
A be B is C will be

1.so 和 very 不能直接接冠词a;
2.in+时间段 表示 在将来的某些时间 内会做某事,其他两项不合句意.
3.if主从复合句总,主句用将来时,从句就用一般现在时表示将来.