With that calm and________ expression of hers，our anxiety almost disappeared into the air.
| A．confusing | B．determined | C．opposing | D．confused |
—The bookshelf fell down itself.
—I know. Neither he nor you ____.
| A．was to blame | B．was to be blamed |
| C．were to be blamed | D．were to blame |
Only if you work hard _____, because hard work is the ultimate source of success.
| A．you will succeed | B．will you succeed |
| C．you succeed | D．do you succeed |
The _____ look on his face suggested that the teacher was quite _____ with the result.
| A．satisfied; satisfied | B．satisfied; satisfying |
| C．satisfying; satisfied | D．satisfying; satisfying |
______, I came to realize that my parents could not always stand by me.
| A．As time gone by | B．With time going by |
| C．As time going by | D．With time gone by |
In my opinion, more attention should be ______ the environment, which is of great importance.
| A．paid to protecting | B．paid to protect |
| C．paying to protect | D．paying to protecting |