So suddenly ________that the animals in the zoo looked very frightened during the total solar eclipse (日全食)．
| A．did the sky turn dark | B．the sky did turn dark |
| C．turned the sky dark | D．was the sky turned dark |
There’s a feeling in mewe’ll never know what a UFO is —not ever .
| A．that | B．Which | C．of which | D．what |
When you answer questions in a job interview, please remember the golden rule: Always give the money exactly ____________ he wants.
| A．what | B．which | C．when | D．that |
What the doctors really doubt is _____________ my mother will recover from the serious disease soon.
| A．when | B．how | C．whether | D．why |
These wild flowers are so special I would do _____________ I can to save them.
| A．that | B．which | C．whichever | D．whatever |
___________ has helped to save the drowning girl is worth praising.
| A．Who | B．The one | C．Anyone | D．Whoever |