Do you know how much time and effort they devoted________ such a complicated project?
The twins look alike,but they __________ in temperament.
They closed the road in a(n) __________ to reduce traffic in the city.
The top of the hill is _________,but the trees grow part way up its slope.
Happy birthday,Alice!So you have __________ 21 already.
Don’t leave matches or cigarettes on the table within __________ of little children.