1in doubt (If in doubt, consult your doctor.)
2exchange information with each other (All the computers on the net can exchange information with each other.)
3all over the world (English is taught almost all over the world today.)
4appear on the screen (A question and 4 choices appeared on the screen.)
5on the page (The only word written on the page was the word "love".)
6information about (The information about the students is in this file.)
7to click on someting (To adopt a sentence,click on the white person icon.)
8waiting for somebody (I'll be waiting for you tomorrow at 7 p.m.)
9stored on a computer (The information is stored on computer.)
10to find out about sth (There'll be trouble when they find out about this.)