—________doyougotothelibrary?—onceaweek.A.Howlong B.Howoften C.Howmuch
This is ______ ruler and that’s ______ eraser.
当你早上遇见老师的时候,你应该说________。
Please call Mary __________ 245—6218.
This is my friend. ________name is Nick.
—Are those your friends? —Yes,_____________.