I hear that apple juice is healthy drink.
| A．不填；a | B．不填；不填 | C．an; a | D．the; 不填 |
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 |
Despite their __________ of interest, Fleming kept trying to develop the chemical ___________ it would be safe and effective.
| A．lacking; in order to | B．lack; so that |
| C．lack; so as to | D．lacking; so that |