Составить вопросы из следующих предложений:
1) They do their homework at night. (when)
2) Mr. Robertson came to the party alone. (who)
3) The car is across the street from the house. (where)
4) I like the red blouse, not the blue one. (which)
5) She felt better after she took a nap. (how)
6) That is an English book. (what)
7) My sister called her boyfriend yesterday (when)
8) She talked to him for an hour. (how long)
9) He studies piano at the university. (what)
10) The party lasted all night. (how long)
11) The check was for $5.50. (how much)
12) She was eating a sandwich. (what)