You can imagine what great trouble we had ______ the new school.
| A．setting up | B．to set up | C．set up | D．to setting up |
. The patient was warned _______ oily food after the operation.
| A．to eat not | B．eating not | C．not to eat | D．not eating |
. I regret _______ you that we are unable to offer you employment.
| A．informing | B．having informed | C．to inform | D．to informing |
. You had better get a doctor _______ your bad tooth.
| A．pull out | B．to pull out | C．pulled out | D．pulling out |
. The matter had better _______ as it is.
| A．leave | B．being left | C．leaving | D．be left |
. He was so foolish _______ his car unlocked.
| A．to leave | B．that leave | C．as to leave | D．for him to leave |