IFA World Cup Brazil, which attracted the whole planet ,________on the 12 th of June.

I won’t call you ________ something unexpected happens.

Do you expect tobe a possibility that we may have three days off for the coming New Year’s Day

It’s clever _____you to help me work out the difficult math problem. Thanks!—You are welcome. Now it’s easier ________ you to understand it.

It’s believed that our moods are sometimes by colours. Many scientists are doing some research (研究) on this subject.