—Hi, Jack! When did you arrive in Berlin?
—Last weekend .I a different culture since then.
| A．was experiencing | B．will be experiencing |
| C．have been experiencing | D．had been experiencing |
Unless you have planted something, you won’t be able to know the pleasure of watching the thing you have planted____.
| A．grown | B．growing | C．to grow | D．to be grown |
These interesting articles were written by Anna, who______for our magazine these years.
| A．wrote | B．would write | C．is writing | D．has been writing |
_____for his expert advice, John is often asked to help others with their personal affairs.
| A．Having known | B．Being known |
| C．Known | D．Knowing |
I suggest you save_____you find with an electronic bookmark so you can return to it later.
| A．what | B．that | C．how | D．where |
It is the only time in history that two Nobel Prizes______to the same person.
| A．have been given | B．had been given |
| C．have given | D．will give |