Passengers are required to _____ seated until the plane comes to a complete stop.
People hold Dragon-boat races __________ Qu Yuan on the 5th of the fifth lunar month.
In a debate, you have to be clear of the ______ of the disabled children.
I’ve tried my best and done quite well, but he ___________ faults with me.
--- Ought we _____ clean the class room today? --- Yes, you _____.
We won’t give up _____ we should fail ten time.