—What do you think people can do for their aged parents? —They_________ do anything except to be with them and be themselves.
----______have you been learning to swim ? ----Half a year.
----_______ did you start studying English ? -----Five years ago.
The room was dark, _______ I turned on the lights.
---Mike hurt his leg while playing football yesterday.? --- _______ .
When they went into the park, they saw someone ______ Chinese Kongfu.