Why are you standing there, Kangkang? —I can’t see the blackboard clearly. Two tall boys are sitting______me. [ ]

How much ________the red socks? –________6 dollars.

It took us over an hour to walk ____ this street. [ ]

I found there was only one copy of “Bighead Son and Small-head Father” on the bookshelf, so I decided to buy _______ at once.

_________do you have PE lessons?–Three times a week.