16.We agreed _______more specific payment terms.
A.on B.in
C.to D.at
17.Extra expenses are to be borne _______me.
A.through B.with
C.by D.for
18.The consignment is delivered _______all the charges paid.
A.in B.by
C.with D.through
19.Owing _______unusual shortage of stock, this offer is made subject to the goods being unsold.
A.for B.at
C.to D.with
20.There are trade exhibitions going on all over China _______this time of the year.
A.at B.from
C.in D.for
