There are so many viruses on the Internet. If ______ accidentally, the viruses may make your computer break down.
A. downloading B. to be downloaded
C. downloaded D. being downloaded
I _______ to your party, but I was prevented by the heavy rain.
A．had meant to come B．was about coming
C．have meant to come D．meant coming
---Where did you come across your old classmate Jane?
---It was in the supermarket _______ she worked _______ I came across her.
A．where; when B．that; when
C．that; that D．where; that
However, at times this balance in nature is ______, resulting in a number of unforeseen effects.
A. troubled B. disturbed C. confused D. Puzzled
Harry Potter is said _______ into over twelve languages by the end of last year.
A．to be translated B．being translated
C．having been translated D．to have been translated
Canada is a country ______many different nationalities as well as a country with foreign immigrants（移民） ______ most of its population.
A. consisted of, taking up B. made up of, consisting of
C. made up of, consisted of D. consisting of, making up
