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1 I can not drink this milk.

2 She can't see you.

3 You could swim last year?

4 Last year I did not know how to ski, but now I can.

how much sugar do you need for the cake ?   there aren,t many beans in the tin.  are there many mangoes left ?   i have got a lot of of butter in the fridge.  how many biscuits do  you want ?