Mum, I’ve been studying English since 8 o’clock. ________ I go out and play with Tom for a while?—No, I’m afraid not. Besides it’s raining outside now.

I don’t like the skirt _______.

The experts were doing their experiment in the lab, ______ what happened outside. [ ]

He inventing a new machine used to handle waste water.[ ]

We found _______very interesting _______English.