________ does your father play tennis after work—Every Tuesday and Thursday.

There is ______ American boy in our class and ______ boy can speak good Chinese .

The seals were stranded（搁浅）on the Rhode Islandbeaches,_____ they were rescued last year.

It’s not necessary to explain the truth _____ there is spring wind, there is green grass．

She is my best teacher ______ help I have made great progress．