In our school library there a number of books on science and the number of them g rowing larger and larger.
They do eye exercises twice a day , so ____of them ____glasses.
He tells me not only his parents but also he ______America.
Planting apple trees is _____ interesting work, don’t you think so ?
.You ________ read in the sun, it’s bad for your eyes. A. ought not B. ought to C. ought not to
—What does the Sign on the bottle mean? —It means “________”. A. dangerous B. save water C. recycling