-- Must I get up at 6 o’clock?-- No, you ______. You can get up at 7 o’clock.A. mustn’t B. needn’t C. can’t
Alow-carbon(低碳)lifestyle has an effectour daily life.More and more attention has been paid toEnergies these days.
The teachers _________ the office for a few minutes when we arrived.
---Mum,_______ I watch TV? ---No. Unless your homework _______________.
__________terrible luck he had yesterday!
Yesterday I met Jim. We ____________ each other since we _________ middle school.