—Where is Mr Green now ? —He ___ to Hong Kong .
The doctors have done everything they can______ the patient’s life.
.--Look, there are ______number of ducks swimming in the river.--Yes. ______number of them is over ten.
--Will Tom come to our party?--______I’m not sure.
They were all very tired, but ______of them took a rest.
After the hard work, what we want is ______a rest.