.Throughout _______ history, English has undergone big changes, especially when Henry IV
became _______ King of England.
| A．the, the | B．/, / | C．the, / | D．/, the |
with the medicine shipped from China，the patient got fully recovered two days later.
| A．Being treated | B．Treated | C．To treat | D．Treating |
As birthplace of Huaxia civilization，Xi' an is city with a long history and abundant cultural relics.
| A．the；a | B．a；a | C．/;a | D．the；／ |
If you have any difficulty ____ how to skate, you can turn to Jacky.
| A．learned | B．to learn | C．learning | D．learn |
He is such a good teacher ______ we all respect.
| A．that | B．so | C．as | D．who |
They are talking _______ they were old friends.
| A．as if | B．as although | C．even if | D．even though |