He tends to ___ his shoes before he goes out to work every day.
Seeing me, Tom---- one of my old friend, walked across the street ______ to me, saying “Long time no see.”
.There has been rising demand for grain as _______ industrial material in spite of the nation’s good harvests.
At the meeting they discussed different ______ to the study of mathematics.
.The children were warned of not being too _______ about things you are not supposed to know.
It was difficult to guess what her _____ to the news would be.