_______ enough is quite necessary for your health, so you shouldn’t stay up too late every day.
| A．Sleep | B．Sleeping | C．To sleep | D．Having slept |
The machine might break down someday in the future, ____, you can dial this number for help.
| A．in that case | B．in what case |
| C．in which case | D．in whose case |
_________ returns first will win the big prize.
| A．Those who | B．Anyone who |
| C．The one whom | D．whomever |
—Mary said Leo worked really hard.
— _______.
| A．So does he and so does she | B．So does he and so she does |
| C．So he does and so she does | D．So he does and so does she |
— I regret _______ you that you failed the exam.
— How I regret _______ so much time playing computer games.
| A．telling; wasting | B．telling; to waste |
| C．to tell; wasting | D．to tell; to waste |
The doctor insisted that the patient ______ seriously ill and that an operation _____ in no time.
| A．was; be carried out | B．should be; be carried out |
| C．was; was carried out | D．should be; was carried out |