Make questions for the underlined words or phrases

I.Make questions for the underlined words or phrases
11.He travel to Nha Trang by train
12.She went to the doctor because she was sick
13.Nam left home at 7 o'clock yesterday
14.He taught English in the high school
15.The homework was very difficult yesterday
16.There are many roses in the garden
17 Liz will send these letters to her friends
18.My favorite subject is Math
19. I go to the movie once a week
20.yes,he is.(He is good at drawing)