> >At once

At once ,

At once , .

 

At once : ; ; .

:

1) She sent these letters to several receivers at once. - .

2) The police came at once after I called them. - , .

3) He told us to set off at once. - , .

4) There are two directions at once. Which should I chose? - . ?

5) See me at once. - .

6) All at once the fire alarm went off. - .

At once ,
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