You can improve your English________ practicing more.
--- You can’t ____what a terrible weekend I had. I had a bad cold. --- I’m sorry to hear that.
--- What about going hiking this weekend? ---Sounds good. The weather is _____.
There will be _____ pollution this year than last year.
---Where’s Mary? I didn’t see her this week. --- I didn’t see her, _____.
---What’s happening? --- There was ____ accident just now.