. ---- Excuse me, Madam. I wonder if this bus goes to the East Lake?
---- ___________. You should take Bus No. 521.
| A．Sure, it does | B．No, it isn’t |
| C．Oh, sorry, I’m afraid not | D．What a pity! It’s not true |
--- 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 |