Ôn đúng trọng tâm – Học chắc từ hôm nay
There’s someone at the door. ____________ it.
Giải chi tiết:
Sheila works _________ an accountant in a large company.
A lawnmower is a machine __________ is used for cutting grass.
I love going to the mountains _______ the winter.
It was ___________ good music that I couldn’t stop dancing.
