we use a (an) ___ to clean the balckbord.a.book b.pencil c.eraser d.ruler

we use a (an) ___ to clean the balckbord.a.book b.pencil c.eraser d.ruler we can use a to sand an e-mail We must try to remember ___ word and learn how to use them.A.eachB.every we have received an order that we ___ the lab for a couple of daysA .mustn't use B .not use 为什么选B 不选A . Jack ___ to be a worker but now he is an architect.(use) We use cotton to make clothes.(句意不变）We use cotton ___ ___clothes We use a c_____ to take pictures. 20.I think we need to see an investment ___ before we make an expensive mistake.A.guide B.entre 英语翻译We use ‘there be’ to show that something exists.We use ‘there is’ before a singular noun or an uncountable noun.We use ‘there are’ before a plural noun. We use a knife ----to cut things ----.对划线部分提问线中间的部分___ ___ you ____ a knife for? 同义句转换1.we use coat to keep warm.Coat___ ___ ___ keeping warm. We can use wool to make clothes.(clothes划线提问) ___ can we use wool to___ ?We can use wool to make clothes.(clothes划线提问) ___ can we use wool to___ ? we have to ___(is) useful when we use fire题目是不是有错? We use the keyboard to type in information.We ____ in information ___ the keyboard. we will not have enough time to grow more trees to take the ___ of those we use ...请问为什么选 这四个选项用法上有什么区别?If we don't,we will not have enough time to grow more trees to take the ___ of those we use for paper.A:spot We will show you how to use the computer.You ___ ____ ___how to use the computer by us. With the great dam ___,we’ll have enough electricity for everyday use.A.complete B.completed C.to be completed D.to complete 为什么选D? 21.It is known to all that gunpowder is ___ Chinese invention,as is the compass,___ instrument that you use for finding directions.A.a; the.B/; an C.a;an D./;the