a/an
____ birds fly south in the winter.
nothing - general statement about birds Birds fly south in the winter.
If you are feel pains in your teeth,you need to go to ____ dentist.
If you are feel pains in your teeth,you need to go to the dentist.
____clock in our classroom tells the right time.
The clock - specific clock
____ students in this class are excited it's Friday.
The - specific The students in this class are excited it's Friday.
I need to change some money,so I go_____ bank.
I need to change some money,so I go to the bank.
____ test on Monday will be about grammar.
The test - specific test
_____ coffee that I'm drinking is cold.
The - specific The coffee that I'm drinking is cold.
Where are you going?
We're going ______ post office.
We're going to the post office.
There is always ____ grammar test at the end of each chapter.
A grammar test - in general - general statement about tests
People need ____ water to survive.
nothing - general People need water to survive.
Where's she going?
She's going ______ hospital.
She's going to hospital.
Excuse me, I have _____ questions?
some questions "Questions" is plural/ it's talking about an unspecific amount of questions here
_____ buses usually make a lot of stops.
Buses - general statement about buses Buses usually make a lot of stops.
Shall we make a phone call to Tom?
No, he must be ______ work now.
No, he must be at work now.
Lennie always needs _____ help from George.
some help "Help" is non-count