In ____late 19th century, Europe changed ______great deal and was playing important roles in ______international trade. 
| A．the; a; the | B．the; the; 不填 | C．the; a; the | D．the; a; 不填 |
—Did you attend David’s wedding last night?
—No. I ________ before that.
| A．wouldn’t have been invited | B．didn’t invite |
| C．wouldn’t invite | D．hadn’t been invited |
The man showed us so heavy a stone _______ no man can lift.
| A．that | B．as | C．which | D．And |
To improve your reading ability, you should ____ half an hour every day for learning new vocabulary.
| A．leave out | B．take up | C．set aside | D．focus on |
This disaster ______ that people had no knowledge of first aid and they hadn’t known how to protect them-selves in face of danger.
| A．led to | B．contributed to | C．resulted in | D．lay in |
I just wonder ____ that delights the whole family so much.
| A．what it is | B．what he does | C．how it is | D．how he does |