--- How many of you have solved the math problem?--- ________, the math problem is far too difficult for us to work out. .
We didn’t start our discussion __________ everybody arrived.
Take the exam carefully, _______ you won’t get full marks.
We hope that with the help of the new skill, Liu Xiang can run ________than before.
The students from Xinjiang enjoy staying in our school because everyone is ____ to them..
The old man used to raise many ________ to make a living on the farm.