42) i feel fine this morning, but very tired last night 43)we__ a conference last week(didn`t had, had, have, were having) 45) this experiment is interesting than the other one( the most, many, more, mush) 46)they__ to the library( are sent, is sent, will be sent, will be sent, will be send) 47) he__ given all the necessary books next week( is, are, will be, shall be) 48) yesterday the first-year students __ the institute laboratories( saw, see, seen, seed) 49) light supper tommorow( will be having, have, will have, had) 50)they__ in the reafing-toom is, are, am)