while we ____the book,teacher ___into the classroom

while we ____the book,teacher ___into the classroom Boo-Boo-Boo 歌词 teacher is ____the new lesson while we are ___ the exam.关于preparing 和preparing for 的填空. 选择填空:We mustn't cross the street ____the light is gieen.( )We mustn't cross the street ____the light is gieen.A while B because C after D until原因 make a boo boo we didn`t go home ____the old man was sent to the hospital 1.until 2.when 3.while 4.that We are moving ____the city_____the country Sall we meet ____the apple tree___five twenty BOO是什么意思 boo hoo at last we were ____the and we ____the gold medal(win) While Tom and mary we 英文翻译~boo boo是啥意思呢? We often buy things ____the shop on ____ way home. We will ___you as soon as possible.____the way ,(翻译) we were astonished ____the temple still in its original condition. ____the teacher came into the classroom,they were arguingbefore after until while as 选 ____the day went on,the weather got worse.A.With B.Since C.While D.As