--Excuse me, can I have this seat, please?--I’m sorry, but it’s_______.
“How long does it take you _______to Beijing?” “More than three hours.”
We can’t ________ the bus before it stops.
“__________?” “He is smart and helpful.”
Read the book ____ some pictures _____ the cover carefully, it’s good for our study.
“Don’t be late again , Tommy” “OK, _______.”