—Mary, what ______in your hand?—Look! It’s a new iPad for my daughter.
The maths problem is very easy, _____ I don’t think all of you can work it out.
Thank you for ______ me go on the trip ,Mr Wu.
We talked _______ until Mr Wu asked us _______.
What did the teacher ________ the students to _______ at the class meeting yesterday?
Shang Hai is larger than _______ in Jiang su .