It has been evident that too many children in the city are left ________ when their development requires parents’ close attention.

(2013·福建泉州七中模拟)Whatever background you come from, you can be ________ successful with your hard work like many others.

It’s too late to go to the basketball match now;         , it’s beginning to rain.

—Mom，dad is smoking again!—Well，let him cut it ________ gradually since old habits die hard.

Make sure the gas is turned off after a bath, which would ________ cause danger.