15.He won’t give up until he the problem.A.work on B.at work C.will work out D.works out
15.He won’t give up until he the problem.
A.work on B.at work C.will work out D.works out
16.It’s a good habit breakfast every day.
A.had B.have C.has D.to have
17.The students are to get good results.
A.hard work B.hard working C.work hard D.working hard
18.each term,teachers give out new books.
A.In the end B.In the beginning of C.at the begining D.at the beginning of