A person who has never tasted bitter won’t know ______ sweet is.

Is everything ready for the party — I hope there are enough glasses for each guest to have _____

At least twenty-nine people _________ at the train station of Kunming on March.1st, 2014.

_______ one and a half months enough for theproject to be finished —I amafraid not The professor is ill and only after he recovers ________ go on withit

Which month has_____ days in a year-February.