They spend too much time____ the report

They spend too much time____ the report
A.writing B.to write C.on writing D.write
What beautiful shoes you’re wearing!They must be expensive
--No,they only___l0 yuan．
A．spent B．took C．paid D．cost
Will you please ___ for my dinner Peter?
--Sure!
A.spend B.pay C.cost D.take
--Sure!
A.spend
B.pay
C.cost