It is difficult for children to change their eating habit later in life. _____，parents should encourage healthy eating from an early age.

I always_____follow the instructions of my doctor when taking medicine.

Come on, Maria! You can also enjoy_____ you have been dreaming of, if you don’t lose heart.

   So far the young man hasn’t had any success; ______ he will keep trying.

Lily seems to know a lot about Hong Kong, but      she has never been there.