Answer questions 11, 12 and 13 based on the
newspaper article below.
Lessons in using the internet safely are set to
become a compulsory part of the curriculum for
primary school children in England from 2011.
The lessons are one element of a new government
strategy being unveiled called "Click Clever, Click Safe".
Children will also be encouraged to follow an online
"Green Cross Code" and block and report inappropriate
content.
"We must ensure that this virtual world is safe for our
children just as we try to ensure that the real world is,"
said Prime Minister Gordon Brown at the launch of the
campaign.
"The internet is a wonderful and powerful tool that is
changing the way we learn and the way we stay in touch,"
he added, "but unfortunately there are risks from those
intent on exploiting its benefits."
Fonte: http://news.bbc.co.uk/ December, 2009.
In the sentence "We must ensure that this virtual world is safe for our children just as we try to ensure that the real world is," the modal verb Must means: