16.Nobody knows who is the first one to add fertilizer ___ the soil to make plants grow better.
| A．to | B．in | C．into | D．on |
Itsound like a perfect destination, but it is really adventurous to go there.
| A．must | B．should | C．can | D．may |
The value of a leader is something to be felt and experienced. can it be put into words.
| A．Purely | B．Partly | C．Rarely | D．Gradually |
If Becky hadn’t missed the bus, she ______late for the lecture.
| A．would have been | B．wouldn’t have been |
| C．had been | D．wasn’t |
Once he saw his daughter back safe, his ______disappeared.
| A．surprise | B．anxiety | C．imagination | D．curiosity |
——I can’t find my MP4 player.
—— You _______it on the desk. I saw a red one on it.
| A．might have put | B．can put | C．need have put | D．must put |