Experts think that ____recently discovered painting may be _____ Picasso.()
---Could I have a window seat ? ---All right. Your flight _____ boarding at Gate 18 at 2:15.
The report examines teaching methods _______in the classroom.
You can arrive in Beijing earlier for the meeting ____you don’t mind taking the night train.
We won’t ______for delivery if you pay now.
---How did you kill your time last weekend? ---Harry took me to a (n) ________restaurant for our anniversary.