– Has the professor’s talk got____ to do with your present research?– Yes, it has____ to do with my research.
_______ by greater demand of vegetables, farmers have built more green houses.
________ they become dirty, the lakes are not able to clean themselves
I think he is ________ to win, but I’m not sure.
The weather turned out to be fine yesterday, I _____ the trouble to carry my umbrella with me.
They ______ a tent and got ready for the night when evening came.