—Sam, come downstairs, please. I need your help.
—Sorry，mum. I on the phone..
| A．am talking | B．talked |
| C．was talking | D．have talked |
Ann was ____ a good mood and kept ____ jokes to us.
| A．in, saying | B．on, telling | C．in, to tell | D．in, telling |
________good advice! It’s so helpful to us.
| A．How | B．How a | C．What | D．What a |
—Mary was heard_______ just now. What happened?
—John was telling a joke.
| A．cry | B．to cry | C．laugh | D．to laugh |
It is silly ______ you to give up ______ to America for further study.
| A．for, to go | B．for, going | C．of, to go | D．of, going |
Would you like to __________us in watering flowers?
| A．take part in | B．come | C．attend | D．join |