-----I think it _______ to smoke .

I think it bad manners to smoke in a reading room.为什么不用it's, I think it's best for us studens _______at school 1.to smoke It’s impolite _______ us to smoke in public I do not smoke,and I think it better _____(not smoke) I think it's _______ to play football and I'm ________ in it 英语否定转移我的书上有这样一句话.I think that it is not impolite to smoke du I think it _______（rain） I think it was a great honor for me _______ to speak to the He is weak.I think he should give up _______(smoke). (　　)1.I think it will _______ them about two hours to do the I don’t think it advisable that Tim _______ to the job since 11 .It took me _______ to think this out,and by that I had c