—Would you come and join us?
—I wish I _____. I am busy at the moment.
| A．can | B．could | C．would | D．should |
He is over sixty, but doesn’t look _____.
| A．it | B．for it | C．as it | D．such |
Why is it _____ he can’t get along well with his classmates?
| A．/ | B．this | C．that | D．it |
Mary wrote an article on _____ the team had failed to win the game.
| A．why | B．what | C．who | D．that |
At last, we found ourselves in a pleasant ark with trees providing shade and _____
down to eat our picnic lunch.
| A．sitting | B．having sat | C．to sit | D．sat |
_____ into use in April 2000, the hotline was meant for residents reporting water and
heating supply breakdowns.
| A．Put | B．Putting | C．Having put | D．Being put |