问题
Smile to the world, ___________ the world will smile back to you.
A:nor
B:but
C:or
D:and;
B:but
C:or
D:and;
正确答案是：
同类题型
To make your work easy to solve, you can______ with one other class member if you want.
Mary and Joy are ____ Class One. They are ____ the USA.
David usually _________ Sunday afternoons _________ computer games with his brother.
Mr. Green is very happy because he is satisfied with his students’ work today.