Children to whom parents always ___________ soon become selfish.

In an interview Beckham admitted that he couldn’t ＿＿ his six-year-old son Brooklyn’s maths homework and had to turn to his former Spice Girls pop star wife Victoria to help out.

-- The cars give off a great deal of waste gas in the streets. --- Yes. But I’m sure something will be done to ___ air pollution.

— You know what? Tom wants to be a politician after graduating from college．— Are you kidding? He will never _____ a person like that．

The professor advised us to think outside the box and to________ new, different, or unusual solutions．