This machine is very easy ______. Anyone can learn to use it in a few minutes.
| A．operating | B．to be operating | C．operated | D．to operate |
I think what _____ to me about her performance is her walking way and sweet voice.
| A．attracts | B．contributes | C．belongs | D．appeals |
---Mary was being badly treated when John happened to pass by and helped her out
---I think it was not a pure______but had been well planned.
| A．coincidence | B．occurrence | C．arrangement | D．incident |
The young couple decided to_____two homeless boys though they had three of their own.
| A．adapt | B．bring | C．receive | D．adopt |
---John always thinks of others instead of himself
---So he does. It is_____of him to want to help others
| A．aggressive | B．evident | C．typical | D．conventional |
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 |