What do you think is the best way ____the wild animals?
| A．protecting | B．to protect | C．protected | D．protect |
We can't _________ his mistakes, which were made because he was too careless with his work.
| A．overcome | B．understand | C．tolerate | D．recognize |
Nobody could believe what Chloe says because she is ___________ changing her mind.
| A．regularly | B．steadily | C．constantly | D．suddenly |
Would it be ___________ for you to pick me up at four o'clock and take me to the airport?
| A．free | B．vacant | C．handy | D．convenient |
Occasions are rare _____________ I can spend a whole day with my daughter.
| A．that | B．where | C．when | D．which |
A few days after the interview, I received a letter ___________ me admission to the university.
| A．offering | B．offered | C．having offered | D．to be offered |