Unit 9 Wheels 教案
a.will be working b.worked c.has been working d.will have worked.
7.she ought to stop working; she has a headache because she
too long.
a.has been reading b.had read c.is reading d.reads
8.i the students’ homework, but i haven’t finished it.
a.have read b.am reading c.have been reading d.had read
錯因與糾正: