The official said rescuers wereworking_____to find the missing miners in the coal mine blast

How do you like your school uniform?– I like it very much because I take ____ in my school.

This pair of sunglasses ____ veryexpensive.

Excuse me, but can I sit here — _________. The man who sat here will be back soon.

You _______ here last week if you were really worried about your work.