Most students walk or ________ / raId / bikes to school.

Mum,          my teacher, Mr Wang.

— Where is my pen ?  Have you seen ____?— Oh, sorry.  I have taken ____ by mistake.

--Shall we go for a picnic on Saturday or Sunday?    -- ______ is OK. I am free this weekend.

There is ___ food in the fridge(冰箱). Let’s buy some.