21．--- May I take your order now?
--- .
| A．No, I’m in trouble now | B．Yes, we obey orders |
| C．Yes, I’d like a dish of chicken | D．No, I don’t have a choice of meat |
--- Jack fell off the ladder yesterday, but he is all right now.
---What a lucky dog! He _________ himself badly.
| A．should injure | B．could have injured | C．should have injured | D．might injure |
_____ in a poor family made Jack very hardworking when he was still young.
| A．Brought up | B．Bringing up | C．Having brought up | D．Being brought up |
To my mind, the secret to happiness__________ your successful work and your contribution towards others’ happiness.
| A．results in | B．consists in | C．brings in | D．takes in |
Will you see to _____ that my children are taken good care of while I am away?
| A．it | B．me | C．yourself | D．them |
______ twice, the postman refused to deliver our letters unless we chained our dog.
| A．Being bitten | B．Bitten | C．Having bitten | D．To be bitten |