The students were so clever to see the solution to the problem very quickly -> How

The dog came near the food. Its owner was busy with the langgage -> The dog whose

"Could you open the window, please?" said Lan

-> Lan asked me..............................................

Maryam and I have been pen pals for over two years -> Maryam and I have written............................

We are studying the............of the population into age groups (devide)

We lived in HN.....................three years

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