Try to apply your knowledge of English grammar in few tasks.
The activity goes like this:
Imagine your friend hides your textbook somewhere. Ask him as many questions as you can to find out the book. Remember, there are few rules to be observed.
1. Ask close ended questions eg.- Is it on the table?
2. you need to frame at least 5 to 6 questions-imagine your friend gives a negative reply for most of the questions.
post your questions and go to the next related task.