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