Love your parents they are alive. Don't wait until it is too late.( )
while
after
until
unless
There _______ a lot of fish in the water.
— Can you see there is _______ interesting book on the table?— Yes. I like _______ stories in it.
— Why not come and join us in the game?— ______. But I must finish my homework first.
— Why _____ these cards ______ orange?— Because orange can cheer you up.
people were found after the Wenchuang earthquake.