Measures have been taken to fight ________recurring food safety problems, but there is still a long way to go before China can rid itself ________ these issues.
| A．for; of | B．for; from | C．against; of | D．against; from |
Though I have often heard this song _______. I have never heard you _______ it.
| A．being sung, sang | B．sang, singing |
| C．sung, sing | D．to be sung, to sing |
Tony was very unhappy for _______ to the party.
| A．having not been invited | B．not having invited |
| C．having not invited | D．not having been invited |
Though ________ money, his parents managed to send him to university.
| A．lacked | B．lacking of |
| C．lacking | D．lacked in |
The research is so designed that once _______ nothing can be done to change it.
| A．begins | B．having begun |
| C．beginning | D．begun |
“What do you think made Mary so upset?” “_______ her new bike.”
| A．As she lost | B．Lost |
| C．Losing | D．Because of losing |