Question

Answer 1

1. The teacher _keeps track_ on each student's performance every day and send it to their parents

2. I've _researched_ on the Internet to find out the cheapest way of travellin there

3. I was afraid that I couldn't _meet the deadline_, so I asked by boss for extension

4. If you want everything to go on the right track, you have to _plan_ carefully

5. The science teacher assigned each child to _prepare a presentation_, which would be presented in front of the entire class.