— There used to be a lot of fish in the lake many years ago.— Yes, but there are very _______ now because of the pollution.
It’s time for supper now. Let’sit.
----______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.? --- _______ .