20. _____ about the economic crisis that he decided to look for more information about it.
| A．So curiously he was | B．So curious was he |
| C．Such curious he was | D．Such was he curious |
It is the first time I ____ to visit the Great Wall.
| A．came | B．come | C．have come | D．had come |
Dorothy was always speaking highly of her role in the play, ____, of course, made the others unhappy.
| A．who | B．which | C．that | D．what |
The teacher had a _______ look when he found that none of his students had finished his homework.
| A．shocking | B．shocked | C．bored | D．boring |
I will keep on trying, ______ I might fail a thousand times.
| A．while | B．as if | C．even if | D．otherwise |
_____ from the mountain, the town is very beautiful.
| A．Being seen | B．It was seen | C．Seen | D．Seeing |