China will continue to curb inflation(通货膨胀) and the economy still has great _______ for rapid growth in the near future.
| A．strength | B．function |
| C．potential | D．burden |
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 |
Bats are surprisingly long-lived creatures, some ____________ a life span of around 20 years.
| A．having | B．had | C．have | D．to have |
The young man always talks a lot ___________ he knew everything, which, of course, makes others unhappy.
| A．once | B．even though | C．though | D．as though |