It’s a good idea _____ a pen friend to practise English.
| A．find | B．to find | C．finding | D．found |
How many ______ medicine are used for the children of six years old?
| A．kind of | B．kind |
| C．kinds of | D．kinds |
Eating fruit and vegetables can help you ______ more vitamins.
| A．got | B．getting |
| C．to get | D．gets |
Here ______ in the classroom.
| A．ten students are | B．are ten students |
| C．ten students is | D．is ten students |
We should keep our classroom ______.
| A．cleaned | B．clean |
| C．cleaning | D．to clean |