Not recognizing me at first，__________.
| A．he closed the door | B．the door was closed |
| C．the door was close | D．I closed the door |
---May I look at the menu for a little while?
--- Of course, _______, sir.
| A．don’t worry | B．it doesn’t matter |
| C．enjoy yourself | D．take your time |
_______ children get older, they become more and more interested in everything.
| A．Once | B．Whether | C．With | D．As |
_______ has been known that ______ other waste found in the ocean, the plastic does not break down.
| A．As; dislike | B．It, unlike |
| C．What, unlike | D．That, dislike |
It is a good plan in theory, but it remains _______ whether it works in practice.
| A．seeing | B．to see | C．seen | D．to be seen |
As senior three students, it is important to ______ a good state of mind.
| A．keep up | B．carry out | C．get in | D．take off |