She looks sad. Could you please tell me ____ that prevents her from being as happy as before?
| A．what it is | B．it is what | C．how it is | D．it is how |
_____ was very ____ that little Jim wrote the letter.
| A．It; careful | B．It; carefully | C．He; careful | D．He ; carefully |
He has lots of friend, only a few of ____ invited to his wedding.
| A．whom | B．them | C．which | D．who |
Villagers here depend on the fishing industry, _____ there won’t be much work.
| A．where | B．that | C．by which | D．without which |
Mr. Smith got to ______ there was once an old temple.
| A．what | B．where | C．that | D．which |
The clerks were at work so ____ that nobody realized it was already lunch time.
| A．accurately | B．absently | C．aggressively | D．attentively |