If you keep learning English for half an hour each day,your English will be gradually improved.( )
at least
at present
at once
at first
-My name is Kate. ______? -Lisa.
Australia is__________the Sydney Opera House.
There are ________people in the square.
Can you tell me_________?
---Don’t depend on others.You have to do it by yourself. ----OK.I will manage________it on my own.