_____ 500g of honey, a single bee would have to make about 10 million trips from the hive to the flower and back again.
A Producing B To produce C Being produced D Having produced
“Why couldn’t they meet us at five o’clock?” “Because they were delayed by ________.”
| A．heavy traffic | B．heavy traffics |
| C．crowded traffic | D．crowded traffics |
“_______ made her struggle to become an artist so hard？” “______ she was a woman.”
| A．What, What | B．That, That |
| C．What, That | D．That, What |
16. _______ medicine works in a human body is a question _______ not everyone can understand fully.
| A．How; that | B．That; which |
| C．That; which | D．What; that |
. These wild flowers are so special I would do _______ I can to save them.
| A．whatever | B．that |
| C．which | D．whichever |
. When you answer questions in a job interview, please remember the golden rule： Always give the monkey exactly _______ he wants.
| A．what | B．which |
| C．when | D．that |