In that big fire all their houses were__________, so they had to build new ones.
Do remember to go to his birthday party on time __________ you've promised to.
A technology company will die soon if it can't __________ to the market fast enough.
We should follow the __________ in a foreign country we are visiting.
__________ our earth, or else it will be no longer fit for us to live on.
Don't __________ a trick on the little girl. She is very shy.