Trees can help___the air and keep it ___ .A.clean;clean.clea
Trees can help___the air and keep it ___ .A.clean;clean.clea
英语解释句子1.Trees can cool the air and clean it.2.When insects a
It is our duty to keep our classroom clean and tidy.句中的 clea
Trees can help _____ the air in the city.A to clean B clean
help,air,trees,the,keep,clean连词成句句号
Trees Keep the air clean.这句话的意思
make,fresh,and,clean,trees,the,can,air.连词组句
Trees not only cool the air but also clean it.
there is ___ clean water , nor clean air and nor clean land
A lot of rubbish ( ) air.A.pollute B.pollutes C.clean D.clea
trees help keep the air clean help后可以直接跟keep吗
英语选择题-The air is cool and clean.-Yes,It ___ last night.