She insisted thbe; was put D．was; should put

Every year there are about _______ people waiting for their trains back home in the railway station before Spring Festival comes.

There are _____ products to be sold in the factory store. Which of the following isNOT correct?[ ]

We’ll have to work extra hours, for there are still some problems ____________ ．[ ]

c bottles can be recycled but they needcleaning thoroughly, _______ they