—Goodbye，John.Come back again sometime.
—Sure，________.
| A．I did | B．I do | C．I shall | D．I will |
Children who are not active or _____ diet is high in fat will gain weight quickly.
| A．what | B．who | C．whose | D．that |
Although it was really a difficult task, he decided to try his best to _______ success.
| A．challenge | B．host | C．approve | D．achieve |
—We are informed that the Weifang International Kite Festival starts at 7:00.
—Oh, I didn't expect it was so early! I ____ to go out for dinner with my friends first.
| A．would plan | B．am planning | C．have been planning | D．was planning |
Will you ____ it that my birds are looked after well while I'm away?
| A．see to | B．turn to | C．turn off | D．see off |
------What's the matter with Tim?
------Oh, Tim's cell phone was left in a taxi accidentally, never ________ again.
| A．to find | B．to be found | C．finding | D．being found |