His laziness ________ his failure; that is to say, his failure _______ his laziness.
| A．resulted from; resulted in |
| B．resulted in; resulted from |
| C．as a result of; as a result |
| D．as a result; as a result of |
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 |
I owe my success to Mr. Smith, a teacher from America, ______ help I have greatly improved my oral English.
| A．by which | B．by whose | C．with his | D．with whose |