Tell some practical ways to prevent/reduce contaminant level of water
Ai nhanh mình sẽ chọn nha
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1. When I got up this morning, my father _HAS ALREADY LEFT____. (leave/ already)
2. By the time I MET__ (meet) you, I _HAVE WORKED___ (work) in that company for five years.
3. When they __ARRIVED__ (arrive) at the airport, her flight _HAS TAKEN____ (take) off.
4. She __HAS DONE_ (do) her homework before her mother _ASKED_ (ask) her to do so
5. When we __GOT_ (get) home last night. We __FOUND__ (find) that somebody ___BROKE___ (break) into the flat.
6. Karen __DIDN'T WANT___ (not want) to come to the cinema with us because she _____HAS ALREADY SEEN__ (already/ see) the film
7. Last night, Peter _HAS GONE_____ (go) to the supermarket before he ______WENT____ (go) home.
8. He told me he ____HASN'T WORN____ (not/wear) such kind of clothes before.
II. change these sentences into the passive voice
1. people are going to solve the problem next month
Do not pour grease, fat down the sink. ...
Minimize the use of chemical cleaners.
Reduce the use of herbicides, pesides and fertilizers in agriculture.
Do not throw garbage into ponds, lakes, streams, rivers, seas...
Use water sparingly and efficiently