John returned with two laborers, with help we finally got the car out of the mud.
| A．their | B．whose | C．which | D．that |
___ the police three months to recover the stolen things.
| A．It needed | B．It kept | C．It spend | D．It took |
___ a very rough sea, with waves ten metres high.
| A．It were | B．This will be | C．It was | D．There’ll be |
It ___ the students in your class who came to see you then.
| A．is | B．was | C．were | D．are |
It’s impolite ___ you to ask one’s private affairs.
| A．for | B．of | C．to | D．on |
When I was in trouble, my friends often ___ me a lot of help.
| A．asked for | B．offered | C．needed | D．wanted |