–What ___ the number of the students in your school?–About two thousand. A number of them_____ from England.
---What's thirty and fifteen? --- It’s _______.
Don't me, I can look after well.
---What about _________ hiking this week? __ Great. I’d like _________ with you.
—___________________—He is going fishing.
—Would you like to go for a picnic?—Yes, __________.