____students actively participated in the discussion, which annoyed the teacher because it showed that ____ of them hadn't prepared sufficiently.

I'd rather our flat _______ so far from where I work, then I _______ so much time travelling every day.

If I -------- the choice of making either an oral or a written report, I -------- the second alternative.

I didn’t hear you were seriously ill ______ I would have visited you so far.

I suppose they won't come in time for the lunch, ____?

On international airlines, there are always ____ a pilot and a co-pilot and each knows the other's job, so, in the event that ____ falls ill during the flight, the other is qualified to land the plane safely.

We ................. no problems whatsoever with the dam since it ................. forty years ago.

It probably ............... if you'd been more careful.

I’m sorry I’m late. You _____ waiting for a long time.

It _____ our dog which barked continuously all night since she was sleeping inside with us.

It’s true that happiness ---- with money, but some money ---- life easier.

The police found ____ counterfeit money as well as guns at the gang's headquarters.

_____ had I got out of the bank ______ I saw the thieves running through the tunnel.