.have some difficulty or difficulties?

people will have some _____(easy/difficult)jobs to do in the future because have difficult time doing have difficult with 与have difficult in 的区别 Have some have some Have some have some Have some apples.Have some ___mathematical concepts of some students was very difficult because the students did not have a math background .a Explain b explaining c have explained d having explained some difficult ones like中的ones 帮我做下这篇英语选词填空,before ,long ,do ,sleep,,difficult ,talk ,help ,after ,usual ,quiet ,work ,game-------------------------------------------------------------------------------------------------------------------some people have pr 6.I have some _________ in working out the problem.A.difficulty B.difficulties C.troubles D.difficult我也选C If you find it difficult to learn english,i have some advice may help,空格的地方选什么?A.what B.that C.where D.how Some of the experiment______in our textbook were very difficult to carry out.A.to describe B.described C.describing D.to have described选什么呢 GRE word list is too difficult to memory.I have tried to memory GRE for 40 times,there arestill some words that I haven't mastered.Why? have a difficult time意思及用法 have difficult in doing 怎么用 have difficult in doing sth是什么意思?