(2013·高考四川卷)—Why are your eyes so red You________have slept well last night.—Yeah，I stayed up late writing a report.

In China it is a custom to give kids lucky money, _______ during the Spring Festival.

Every time they met, they ____ talk about former classmates they remembered.

Eregulations and compete on the principle of fairness andco-operation.

Our holiday cost a lot of money.—Did it? Well, that doesn’t matter ________ you enjoyed yourselves.[ ]