He always puts his students ______ everything.

(单选题)Some experts think reading is the fundamental skill upon____ (单选题)At the beginning of class, the noise of desks ____ could be (单选题)This machine________. It hasn’t worked for years. (单选题)Most of us know we should cut down on fat, but knowing such (单选题)My MP4 player isn’t in my bag.Where I have put it? (单选题)___of the twins was arrested, because I saw both at a party (单选题)An artist who was recently traveling on a ferry to the south (单选题)Letterboxes are much more _______ in the UK than in the US, (单选题)The biggest whale is ______ blue whale, which grows to be ab (单选题)The local authorities realized the need to make for eld