After he the golf club, he has a number of competitions.
| A．took part in; taken part in | B．joined in; joined in |
| C．joined; joined | D．joined; taken part in |
---I am going to the supermarket to buy a quilt.
--- ________ You can easily buy one on the Internet.
| A．Why not? | B．Good idea! | C．Why bother? | D．By no means. |
The doctor persuaded him to _____ smoking.
A throw away B put out C give up D take away
That boy spent much time _____ computer games.
A play B playing C played D to play
I am too tired. I _____ my homework all morning.
A have been doing B did C do D have done
_____ we know, Mr. Black is an expert on language teaching.
A As B That C Which D What