—Mum, my little sister is crying all the time.
—Mary, be ! She feels sick. You should take good care of her.
| A．patient | B．lazy | C．polite | D．fair |
We will never forget those happiest days _______ we spent on the summer camp.
| A．which | B．that | C．when | D．on which |
We wondered __________ this afternoon.
| A．whether we would have a meeting | B．where would we have a meeting |
| C．whether we will have a meeting | D．that we would have a meeting |
The little boy was last seen __________ football by the river.
| A．to play | B．play | C．played | D．playing |
They found __________ impossible to finish so much work in such a short time.
| A．that | B．it | C．it is | D．this |
— I rang the bell for a long time last night, but no one opened the door.
— Oh, the family __________ a party and they didn’t hear the bell.
| A．had | B．were having | C．had had | D．have had |