Eye doctors recommend that a child's first eye exam ________ at the age of six months old.
| A．was | B．be |
| C．were | D．is |
The day will come _____ the people all over the world will get rid of poverty.
| A．that | B．how | C．when | D．where |
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 |