--- Hey, Tom．I think I am quite familiar with these photographs．
--- It is impossible for anyone_________ them before, because Mr．Newman had them developed today．
A．having seen B．to have seen C．to see D．seeing
---Is there anything wrong, Bob? You look sad．
---Oh, nothing much．In fact, I ____ of my friends back home．
A．have just thought B．was just thinking
C．would just think D．will just be thinking
The genetic engineering, ______ progress has been very rapid recently, is perhaps the most important of all the sciences．
A．to which B．with which C．in which D．for
---What’s made Tommy so upset?
--- ______, I believe．It shocked him so much．
A．He lost the game B．Lost the game
C．Losing the game D．Because of losing the game
---I’m sure Andrew will win the first prize in the final．
---I think so．He ______ for it for months．
A．is preparing B．was preparing C．had been preparing D．has been preparing
All the students ______ gets along very well with will be invited to her birthday party．
A．who B．that C．she D．what
