Why does Nunberg report from an "Olympian point of view"?

(The Decline of Grammar)

Choose the correct answer. 1 our team will win / will be winning the championship this year. 2 jane has trained harder than everybody and she is going to win / will have won the race next week. 3 by next week we will have finished / will finish watching the series. 4 you will do / will be doing the environment good by recycling. 5 by the time i am eighteen i will have finished / will be finishing secondary school. 6 i am going to be / will be being in better shape because i bought a bicycle. 1 i have decided that i will go work / am going to work as a volunteer at an animal rescue centre. 2 the flight arrives / will arrive in paris at ten. 3 if they continue the good work they will have saved / will be saving all of the tortoises by the weekend. 4 you will probably be / are going to be probably tired when you finish the work. 5 ‘the phone is ringing’. ‘i will get / am going to get it’. 6 i will go / am going to the italian restaurant tonight with janet. complete the sentences with will, going to, the present simple or present continuous form of the verbs in brackets. 1 i hope mary (not be) late tomorrow. 2 the schedule says that the bus (leave) at 3.00 tomorrow. 3 look at those clouds – it (snow). 4 i (meet) jim at the cinema at 9 o’clock. 5 i (have) a party on saturday – it’s all arranged. 6 i joined a gym and i (get) in shape for summer.