He is sure of a house-building {{U}}boom{{/U}} after the new investment policies are put into practi...

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will make sure，turn off makes sure，are turned off will make sure，will turn off makes sure，will be turned off

will make sure, will be turned off will make sure, will turn off makes sure, are turned off is made sure, will be turned off

once again over and over again once again over again

sure to win; sure to success sure of success; sure of it sure to win; sure about that sure about winning; sure to win

make sure sure make sure of be sure of

will make sure, turn off makes sure; are turned off will make sure; will turn off makes sure; will be turned off

who he is who is he what he does what does he do

which if whether that

will make sure，turn off makes sure，are turned off will make sure，will turn off makes sure，will be turned off

certain sure right exact

that ; that that ; whether if ; whether whether ; whether

how he will be back that he has come back why he has come back if he has been back

am    was
   were    are

To see to it；to be done Making sure； to be done To make sure；to do Seeing to； done

Making sure To make sure Having made sure Make sure

he was quite sure of success he was not sure he would get the umbrella back he was rich enough to afford a new umbrella he did not know what to do

that, if that, that if, if if, that

that ; that that ; whether if ; whether whether ; whether