14.What they need at present ____ (be) science and technolog

be present at the science show in person 英语翻译Firm foundations for the future of science and technolog The students are discussing what ____ at present. be present at意思 They need our help badly at the moment,____? What (be) they ____(do)?They ________(play)checkers. at present,must to be. you can only be sure oof what you have at present为什么用what? What do they need? They consider ____ the problem should be solved at once 英语翻译what he ____,to be frank,please us present.A does do B d you can only be sure of what you have have at present.这里的wha