Yesterday evening I was playing the piano________the doorbell rang.A.whenB.beforeC.while
This is my friend. ________name is Nick.
—Are those your friends? —Yes,_____________.
--Is that Mary Green ? --No , it’s Gina Millers . Her ____name is Gina .
Tom and Jim __________ in Class 3.
-Is this an orange?-Yes, ___________.