I am tired _____ the partner I have been working with; he is too hard a person______[ ]

We had to ______ our visit to the Bird Nest because we didn’t have enough time to see them before we left Beijing.

The student must have been ill yesterday, ______?

It is only when a football player has aged and beenthrough many battles ________ he learns an important lesson: there is no “I” in“team”

.-Look at that girl! Is it Susan-No,it__________be her.She has gone to her hometown.