— Hi, Jack. Would you like to go to Hawaii for the summer holiday?— I’d love to! Though I __________ there twice.A. am B. will be C. have been
Don’t spend __________ time playing computer games . It’s bad for your eyes.
Is there _____________ in today’s newspaper?
If we ________ careful, fire can be dangerous.
Miss Li came into the classroom ____ a smile _______ her face.
His friend found______________ to tell him the truth .