1.When I undertook to repair (repair) the machine, I didn’t reckon for so much trouble.
2.Don’t put off what should be done today to tomorrow.
3.The Internet is widely used, which speeds up the development of English.
4.I met some old school friends on the anniversary of our graduation.
5.Since your English is poor, why not consider (consider) joining an English club to improve it?
6.Misunderstandings arising(arise) from lack of social communication, unless handled properly,may lead to serious problems.
7.A small boat loaded (load) with fish slowly drew near, and stopped beside the bridge.
8.Tom’s voice choked (choke),and the tears ran down his cheeks.
9.They tried all means, which possibly are helpful,but unfortunately (fortunate) not a means has worked so far.
10.Different teachers make different contributions to a student’s growth (grow).