The last time we had great fun was _____ we were visiting the Water Park.
| A．where | B．how | C．when | D．why |
The number of people present at the meeting _______ two hundred and a number of them _______ from the countryside.
| A．is, are | B．is, is | C．are, are | D．are, is |
Giving up smoking is a slow and painful _______ for him.
| A．pressure | B．process | C．motivation | D．profession |
Busy _______ he was, he managed to spare some time to help plan the project.
| A．while | B．although | C．as | D．when |
The maths teacher demanded that all the students _______ the examination paper within one and a half hours.
| A．would finish | B．finished | C．finish | D．could finish |
You must keep it _______ in mind that education is the first productivity.
| A．mildly | B．firmly | C．tightly | D．roughly |