1，the way she thought of__enough money was to increase the production
a,got
b,get
c,getting
d,to get
2,to get a better view of the stage,__
a ,our seats had to be changed
b,we had to change our seats
our seats were changed
]d,our seats will be changed by us
3,he was busy writing a story,only__once in a whileto wash his face with cold water
a,to stop
b.stopping
c.to have stopped
d.having stopped
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