Theengineersinthislabspentseveralweeks_______theirplansforthenewbicycle.
Withthehelpofthegovernment,alargenumberofpeople---_______afterthefloodin1991.
John _______ to be a polite man. But in fact he is veryrude.
Whenyoufillintheapplicationform,pleaseuseyour_______addresssothatwecancontactyoueasilylater.
This river is so big that it is impossible to build a _______under it without modern technology.