问题
Help others whenever you can， ______ you will make the world a nicer place to live in.
A:or
B:if
C:and
D:but ;
B:if
C:and
D:but ;
正确答案是：
同类题型
go by _______train, you can have a quite comfortable journey, but make sure you get_______fast one.
Tom can make his kite______ higher in the sky
____ Wang Fang have two small eyes—No, she doesn’t.
Which of the following words is a homophone
1. The little girl ________ to be a good singerif she gets good training in a music school.