He is known _____ a scientist and famous _____ his research on rice.
______ the ______ of buying a house, it costs little to rent a house.
The volunteers try to convince people _____ the fact that some species are in danger of _____.
Across the river _____.
_____ all the demands had been refused _____ to go on strike.
The temperature has _____ heavily, which doesn’t _____ the growth of the crops.