余弦定理公式cosa

would have been 是什么时态,怎么用,帮忙举几个例子. The window is broken.It needs____（repair） 为啥是 to repair 而不是 repairing 不是说need被动用ing么The window is broken.It needs____（repair） 为啥是 to repair 而不是 repairing 不是说被动的时候 need doing sth.么 You should help _____ the broken chairs and desks.A repairing B repaired C to repair D repairs我觉得A、C都对呀 ( )Which shop will we go____?A to B for C from D /要详解 介词填空：Which shop will we go ______? About 90% say staying with their parents makes them feel safe.-----,they feel unsafe when they left alone中间----应填什么·· he has a wife and ten children to keep,poor fellow keep在这里怎么翻译啊 为什么是keep 求翻译：Unless you eat the correct foods,you will be able to keep fit and stay healthy. the radio is broken,it needs_________.A.repairing B.to be repairing C.to repair D.be repaired应该是被动语态,但我觉得如果选D 那need to 就不成立了,难道be不是动词? the bike doesn't need repair 还是 repairing will to go to还是will go to?我将要去中国了 是 i will to go to china还是i will go to china还是i am gonging to china 约了喜欢的女孩子周末去看电影,我该准备什么?我想让她那天过得愉快点.希望好心人真诚的回答, 翻译 We’ll also keep a close eye 甲壳虫的现在报价大约在多少 英语翻译My parents were very proud too,although they warned me about keeping my grades up and making sure I did all my homework every day. It is also quick thinking to keep he from being hurt的翻译 the computer need ———— 填repairing还是to be repaired need doing 和need to be done 的区别单选题：it is a question that really_A____.A.don't need answering B.needn't to be answered为什么不可以选B 我在网上搜过 need doing 和need to be done是一样的 打错了 don‘t 是doesn't need to be repaired是什么用法,不应该是ING!不是主动表被动吗? need doing ,need to be done,need to do 三者的区别?讲的要详细点. 你们通常在周末看电影吗?（翻译为英语） 同义词和近义词是一个意思么? Keep on Keeping On 怎么翻译? keep on lecturing怎么翻译? 改错The problem is if they can provide us with enough food and water . what will happen tomorrow?中文? They refused to provide us with all the information ___ we need In fact,what will happen tomorrow,tomorrow still tomorrow, We will ask the man ______ 选项:a、providing food for us b、 to provide food with usc、 providing us with food d、 to provide food for us Gareth Gates：1、口吃唱过《Anyone Of Us》不是 Gareth Gates （葛瑞盖茨）人名叫什么? gate和kate是同一个发音吗? Gareth Gates是谁啊?说说他的过去吧