Students should by all means______ their studies though there are a lot of entertainments inviting them.
| A．devote to | B．fix on | C．concentrate on | D．pay their attention |
I talked to my friend about it, and he’s __________ giving up the plan.
| A．in search of | B．regardless of |
| C．in agreement of | D．in favor of |
Instead of telling the joke he had planned, Crystal _________ a new one.
| A．come up | B．took up |
| C．made up | D．cut up |
Animals are more ____ to the environment than human beings, which is how they survive.
| A．sensitive | B．attractive |
| C．cruel | D．committed |
—What is your primary goal, Miss Sang Lan?
—To __________ better treatment for disabled people.
| A．advocate | B．accomplish |
| C．appreciate | D．accompany |
I believe that human cloning is wrong. If we toy with nature, we will have to deal with the _______.
| A．concepts | B．conflicts |
| C．consequences | D．crimes |