With two extra floors built, this hotel can ________ more people than before.

Without proper lessons, you could ________a lot of bad habits when playing the piano．

 More attention must be paid _          ___ the endangered animals.

The officer ordered the policeman to __________ that tall man in a black hat. He thought the man might be the murderer wanted.

 After a few courses on painting, Helen said she would ________ oil painting in her spare time.