At this time yesterday afternoon, I____ my bike in the street.
A. rode
B. is riding
C. was riding
I found ________difficult for me to finish the work on time．（ ）
A．thatB．itC．this
You can surf the Internet _________ you want to know more about the 2020 World Middle School Games．（ ）
A．ifB．althoughC．until
_________beautiful city!
Yes． Tourists from all over the world come to visit it every year．（ ）
A．HowB．WhatC．What a
Must we clean the classroom at once？
No， you ________． You may clean it after school．（ ）
A．mustn'tB．needn'tC．can't
When are we going to see the movie Zoo Topia， this afternoon or tonight？
________ is OK． I'm free today．（ ）
A．EitherB．BothC．Neither