تعلم الإنجليزية من خلال اللعب: امتحان إلكتروني للمرحلة الابتدائية

we 're talking ............ popultion

They ........... picking up the garbage

What is he ............ now ?

............ can make water pollution

He ............ a football match now

I ............ an email to my uncle soon

She is ............. gloves 

They ............ helping the environment

Now , he ............. for the bus 

Scientists are ............ new forms of renewable energy

............ can be dangerous when there is too much in the air

It's important to ............. plastic

I ............... walking to school

What is she ............. ?

............. are made by factories , car and lorries .