_______ makes me feel worried is _______ singing stars are centered on by masses of teenagers today.

They are letting us use their computer, and __________ we are giving them the results of our research

My mum is a typist.— I know this sort of work ______ skill and speed.

t particular about laptops, but________, I prefer IBM to Sony

This is ______ useful guidebook.— I agree with you. We may get lost without it.