Mrs.Jones ______________in the garden at this time yesterday.( )
worked
was working
has worked
—I saw Mr. Wang at school just now. --You ____________ make a mistake. He has gone to Shanghai and won’t get back until next Monday.
This book ___ be yours. Look! Here is your name.
– Listen ! Is Professor Johnson giving a report in the hall? – No, it _______ be him. He has gone to America.
You ________ cross the road when the traffic lights are red.
---- go swimming with Dad , Mum? ----No ,you needn’t. You can go bike riding.