The specialist at the meeting will give us a lecture next week .
_____surprised me most was _____such a little boy of seven could play the violin so well.
Bobby ______ me your secret, but he meant no harm.
We must do whatever we can to____________the river being polluted any more.
. His success was because of ________ he had been working hard.
People will be encouraged to eat healthy food, ________ and to drink less beer and wine.