I. Đặt câu hỏi cho các câu sau, bắt đầu bằng từ cho sẵn.
1. Ba is very good at Electronics.
Who........................................................................... ?
2. The books on the shelves on the right are English books.
Which books ............................................................. ?
3. In History, we learn past and present events in Viet Nam and around the world.
What ......................................................................... ?
4. They have English classes on Tuesday and Thursday.
When.......................................................................... ?
5. You can find a book by looking in the card index.
How .............................................................................. ?
6. Hung goes to the music club twice a week.
How often...................................................................... ?