Are your parents doctors, too——No, they are teachers. ___ of them loveteaching very much.

I _____not thank you too much for your help.

.It’s the sort of work that ____a high level of concentration.

Did Linda see the traffic accident -No, nosooner ______than it happened.

ea of fish being able to produceelectricity strong enough to light a lamp is almost unbelievable, _____ severalkinds of fish are really able to do this