By midnight the floor was wet with beer. One young technician slipped and bumped into another. They struggled, ________ trying to get the other in a head-lock.
_______ at the airport, he telephoned his wife and told her what he would do when he got home.
—Have you finished the work? —Not yet. I _______ to do it just a moment ago.
______ is known to everybody, the moon travels round the earth every month.
When you are driving on this road, you have to limit your speed _____ 60 miles per hour.
—What do you mean. There are only ten tickets? —There ______ be twelve.