1/ It is not certain that Mary will participate in the contest. (speculation)
=> It is not certain that participating in the contest is within Mary's speculation
2/ Henry worked too hard at the office, which led to his illness. (taking)
=> Henry's illness was due to his taking up so much work
3/ Everyone started laughing the moment the announcement was made. (burst)
=> No sooner had the announcement been made than everyone burst out laughing
4/ In the next few years, we'll certainly hear a lot more about pollution. (deal)
=> In all possibilities, the world will deal with a lot more about pollution in the next few years
5/ He puts all his money in a safe so that nobody can never steal it. (stolen)
=> For fear that his money might be stolen, He puts it all in a safe
6/ His last letter to me was written 3 months ago. (heard)
=> It has been 3 months since I last heard of him
7/ Be proud of what you achieved so far. (achievements)
=> Pride yourself on your achievements so far
8/ He never uses corporal punishment even though his son behaves badly. (resorts)
=> However badly his son behaves, he never uses corporal punishment
9/ Don't be taken in by his sugary words . (fall)
=> You should not fall victim to his sugary words
10/ Roger was defeated once again by Novak in the Dubai Tournament. (more)
=> Roger lost once more to Novak in the Dubai Tournament.