Thenewdiscovery_______beofgreatservicetomankind.
A、isboundto
B、isboundfor
C、beboundto
D、beboundfor
Thetwogirlscompetedwitheachother______thehighestmark.
A、for
B、with
C、to
D、against
Pleaseremindme_______herthisnote.
A、leave
B、toleave
C、leaving
D、left
Hewas______towithdrawfromrunningforthepresidency.
A、trusted
B、credited
C、convinced
D、believed
It_______methreeyearstodrawthebeautifulhorses.
A、took
B、paid
C、spent
D、cost