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
The man over there _____me of my math teacher who I like very much.
----Wh at’s the ____of the used car now? ----It’s about $5000.
---Do you know how to use this word? ----Sorry, but why not _______in the dictionary.
Doctors advise us ________masks on such hazy days.
----Who _____the good idea at the meeting? ----Tom did.