适当形式填空A.add,addition,additional,adding1.Aunt Mary gave us sa
适当形式填空
A.add,addition,additional,adding
1.Aunt Mary gave us sandwiches for our picnic and a bag of cookies in_______
2.Mother will need _________help to do the work.
3.Three______to four makes seven.
4.An ________ machine was invented many years ago.
B.use,to use,useful,useless
1.He makes himself generally_______.
2.The company now_____a computer to do all its accounts.
3.A computer with several different_______sell well in the marker.
4.We tried all sorts of medicine but they were all _______.