А. open the brackets. jack (not, be) sure when he (finish) his new novel.if the novel (not, have) a happy end, i (not, read) it.well, paul, you always (lose) your keys! the airplane (arrive) at seven.i (hear) you (get) married.

Jack  is not sure when he finishes his new novel.
If the novel does not have a happy end, I won't read it.
Well, Paul, you always are losing your keys!
The airplane arrives at seven.
I heard you had got married.