The volunteers ________ a lot of help to the old and the young since 2010.( )
A.offeredB.have offered
C.are offeringD.will offer
They want a football match.( )
not watch
watch
to watch
He this city when he was eighteen.( )
A.leavesB.doesn't leave
C.left
There a computer and some books on the teacher's desk.( )
is
are
be
We have lunch_____ school from Monday to Friday.( )
on
at
with
Robots usually do work in factories.( )
heavy
heavier
heavily