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1£®Maths is ________ useful subject£®You can't drop it, I think£®
2£®It is ________ long time since we met last£®
3£®Tom's father is ________ artist and his mother is ________ engineer£®
4£®Last Sunday we had ________ good time£®
5£®There are only two letters in the word¡°us¡±, ________¡°u¡±and ________¡°s¡±£®
6£®Before he became ________ university student, he was ________ army man£®
7£®I spent ________ hour and ________ half writing the composition£®
8£®Do you have ________ answer to my question?
9£®Have you got ________ ten-yuan note?
10£®The car has ________ ugly colour£®
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