Professor Li always allows his students to voice their opinions in class, ______ sometimes their opinions are not sound.
--Why has he been staying at home these days? --He ___________ since a month ago.
The president of the country was ______well of when he was in power.
They suggested not only___________ to the party but also give a performance.
The gas tank____________ twenty gallons of gas, but now it may____________ only three gallons.
--The two pairs of shoes are __________ the same colour. --But they are different __________ colour.