Why didn’t you come to Simon’s party last night?—I wanted to, but my mom simply _________ not let me out so late at night.

Could I speak to Mr Brown —— ______ ， I’1l go and see if he is in.

Vitthis special chemical，________，affects our brains，making us feel happy.

___________it__________to rain tomorrow , the sports meet would be put off until the same time next week.

Nineplusthree _________twelve.