._____ this experiment is not difficult .(为什么是to do 不是doing!

35.With such a short time (leave)______,it’s impossible for US to finish this complicated experime为何填left,而不填has been left this _____ my father 英语翻译This pair of shoes _____ _____ _____ _____.Can I _____ _____ _____ _____? 英语翻译This tree is _____ _____ _____ _____ that one. 英语翻译Anyhow,this difficult problem will _____ _____ _____ _____. This is my fmily photo.改为同义句 格式This is _____ _____ _____ _____ _____. How long _____ have _____ this village? This is _____(she)bike this is tom _____(speak) This bicycle is _____(cheap) Is this _____ (you) book? ls this new calculator _____? This shirt is made of cotton.（改为同义句） This is _____ _____ _____ _____. How much is this watch?同义句_____ _____ _____ _____ of this watch? 这个句子太难了,他看不懂.This sentence is _____ _____ _____ _____ _____ understand. what do you think of this movie 改为同义句_____ _____ you _____ this movie? Can you come this evening?保持原意Will you _____ _____ _____ come this evening? whose is this math book?(改为同义句)_____ _____ _____ is this?