1 it is brave of him to tell her what he thought about her.
2. iam sorry to hear your bad news
3. The number of people using public transport has dropped slightly.
4 I'm busy revising for exams at the moment.
5 The government decided to invest in building the very first metro systems as there was an increased demand for travel.
6 if i knew much about historical events, I could help her with her history homework.
7. i have never heard about the tram system in Hanoi.
8. it took firefighters two hours to release the driver from the wreckage.
9 the president was taken to the hospital for an emergency operation.
10.the computer crashed after I had saved my document